Pay no attention to these scam accounts using the same name and picture as this account in the comments. Unless "The Slow Mo Guys" is in a bubble with a check/tick mark next to it, it's not us. I will never contact you on any platform with a free gift or any offer like that, as much as I love you. I know most people already know this but I've had a few emails recently where people seem to have fallen for it. Doing my best to ban them from the channel but it's hard to stay on top of all of them. Be safe out there my friends! - Gav
@@CryMoreQT 🤓 Well actually, since it’s a decimal, saying two two is technically more accurate then twenty two. According to my research all Brits say it this way. Sorry, I had to put on my geek glasses for that one…
Hey would y'all be interested in filming one of my catapults, or trebuchet? Here's a couple of short videos of the catapult I'd like to see in slow motion. It's transonic, but I can get it supersonic. th-cam.com/video/7NF4FhVHqp0/w-d-xo.html th-cam.com/video/cMx0qRwzZwg/w-d-xo.html
@@LexanderMiller well potentially. As you saw with the 9 mm it was traveling extremely slowly. While it travelled a fair bit it could hardly be considered deadly or even dangerous. For a bullet to be dangerous it needs to be traveling very fast. Though it may simply be impossible for a 9mm bullet to actually hit the primer of say a 10mm cartridge. Would be an interesting experiment. But dangerous? Not as dangerous if these were being fired from out of a chamber and barrel.
Jesus is the only way to healing, restoration and salvation to all souls. Please turn to him and he will change your life, depression into delight, soul heading from hell to heaven all because of what he did on the cross “Whoever calls upon the name of the Lord shall be saved” Romans 10:13
What Gav says at the end about the footage still being surprising, despite expecting it, is spot on! Each and every video, I see the title and can imagine roughly how it's going to look, but I'm then blown away by how much detail and cool stuff there is to look at. Awesome every time, and still getting better 11 years on!
Jesus is the only way to healing, restoration and salvation to all souls. Please turn to him and he will change your life, depression into delight, soul heading from hell to heaven all because of what he did on the cross “Whoever calls upon the name of the Lord shall be saved” Romans 10:13
Just think about how far this specific technology has come in such a short amount of time. It's truly amazing that we are able to capture such insanely fast events and slow them down so we can take in every step it has taken on the way while maintaining such detail. It's just beautiful..
We can all agree this is some amazing slow motion footage, but can we take a minute to appreciate Gav's audio design in these videos?! I remember a video some time ago where he explained how he adds most of the audio in these videos and this one is so incredibly satisfying!
@@rixxey2048 he adds sound effects and also slows down certain sounds. None of the noises a real in a sense that if you slowed it down that much it wouldn't sound right
Yeah, seriously; as a hobbyist working with audio on occasion I've a good ear for sound effects and I love that there's other folks out there who appreciate them as much as I do, because holy cow does it make phenomenal difference to presentation haha
@@rixxey2048 Actual audio slowed down more than ~100X becomes so low pitched that it's beyond the range of human hearing, so they have to add the sound effects in.
I like how they actually discuss what they think happened and pretty knowledgeably as well instead of just scripting an answer to give us. They take us on the journey as they learn which is what I really enjoy.
There's a type of gun that used mini rockets as ammo called Gyrojets, and they are kinda rare and hard to find, so there's precious little videos of them working on youtube, and I haven't been able to find any video with slow motion action, let alone super slow motion. A tiny rocket bullet might be something really fun to see in superslow motion, and I'd like to leave my suggestion for you guys if you think you can get your hands on a gyrojet pistol.
@@scottydu81 I have, that thing is interesting, but the "Trounds" as the creator calls them, dont hold up to pressure any more because of the plastic like material their made of cant contain the pressure any more and their not something you can casually 3D print replicate in a sturdy enough material, so you likely wont find any footage of them being used
I was thinking the same thing. Though this is my first video, so when I saw the tiny gun as they introduced it at the start, my first reflex thought was " Gun! Don't point it to close to your buddy's face! Always treat it as if it's loaded! Wear safety glasses" 😅.
This is actually a pretty good example of mass and inertia. Since the casing has much less if it is not restrained, the casing actually becomes the projectile while the bullet just kind of wanders away.
The shell will actually expand slightly inside the chamber, which makes it friction fit and fire form to the inside of the chamber. This is why ejecting spent rounds is more difficult than expecting unfired rounds (and why part of the reloading process involves recompressing the shell to its original size). If you oil the shell, you can damage some of the weaker actions because the shell becomes a projectile that slams into the back of the action.
Demonstrates the law of conservation of momentum, to be precise. The bullet's mass times its velocity will be equal to the casing's mass times its velocity; since the bullet is much more massive, the casing will have a much greater velocity.
The primer does it all. The primer compound ignites, builds up enough pressure to push itself out of the primer pocket, which it can as it is not held in by a breech (Nothing to do with a firing pin). Occasionally there is enough pressure generated by the primer to move the bullet forward and the case backward, but never enough heat and pressure in the case to ignite the smokeless powder, as this needs both do that and to build up pressure. Smokeless powder is hard to ignite. Try it again with black powder as a propellant....Even in a firearm it is, by choosing the wrong combination of primer, smokeless powder and bullet-case friction possible to have a failure to ignite the powder in which the bullet just moves a little on primer pressure alone. Enlarging the confined space the powder is in, making it even harder to ignite. That js the reason why we have normal primers and magnum primers that generate more heat and pressure. So Thats why the primer pressure in the case just blows out the unburnt powder through the flash hole. The rimfire is different. No separate primer that can blow out and release the pressure, very finely granulated smokeless powder that is easier to ignite and burns faster, and this generates the heat and pressure to move the case (the primer) back and the bullet a little forward.
4:53 the propellant actually never burns, basically what happens is the primer gets hit and goes off and pressurizes the inside of the cartridge, pushing it out and back at the pinfire gun, but the pinfire gun is still not done shooting out hot gasses into the already pressurized cartridge, so that's why the first wave of powder flies out, it's like if you were to blow into a cup of flower and then a bunch of it flies back at your face. Then when the pinfire gun stops pushing gas into the cartridge, it creates a vacuum effect and pulls the high pressure air out of the cartridge and into the normal pressure air, which pulls some more of the powder along with it. I know I'm a huge nerd for this, but I couldn't help myself
The probe lens shot was fantastic: the lighting, the sense of speed from the cloud of gas spraying by, the way you can follow each step of what happens...
That shot of the 22lr brought back memories. When I was younger and less careful, I decided to shock a 22lr with a big capacitor. It set the bullet off, and the casing and bullet flew in opposite directions. However, the casing flew with such speed that it ripped a line through the top of my finger, and I was convinced I was going to lose my finger. Luckily it was just a mere flesh wound. Those casings can cause serious damage!
I had a similar experience smacking a 12 gauge shell capped off on a coffee table it threw the percussion cap through my hand, I didn’t realize because it happened so fast until I started seeing drops of blood
The “percussion cap” is called a primer, the round thing with the 3 holes is called the anvil. When a gun fires normally, the primer still has the firing pin against it to prevent it coming out, but occasionally you have a primer rupture, and just like here, the powder burns, but the path of least resistance is out the primer pocket
There is also the problem of not having an enclosed chamber. Part of the purpose of the barrel in a firearm is to prevent the pressure from blowing the unburnt powder away. With an enclosed chamber + barrel, the powder is still in the enclosed space catching fire. You could probably prevent the primer rupture by using rimfire instead of centerfire, but you would still have the problems of pressure and unburnt powder escaping out the front.
As someone who loves the engineering and physics involved in firearms just as much as actually using them, I find this absolutely fascinating. I've never actually considered what might happen to a round if ignited without the containment of the chamber and barrel. That was more epic than I would've imagined, every result of that was interesting in a different way. The tiny bits igniting and propelling the other bits out in two separate streams, the percussion cap flying back and the case separating from the bullet at nearly the same speed, the rimfire actually firing with enough force to dent the case and propel the bullet. Absolutely amazing, thanks for that one guys.
As I said above - Kinda disproves the myth that cartridges in a fire shoot the bullets everywhere. Without the barrel to direct the force, the casings just blow off.
It would be interesting to see how far the bullet would go if you could put a backing plate behind it so the shell can’t come back towards the gun, a plate with a hole you’re shooting through to set off the primer. I think a lot of the energy is split sending the casing backwards and the bullet forward, obviously it wouldn’t go as far as a sealed barrel but I wonder if it would go half as far or how much lower the velocity would be.
The back plate with a hole is a great idea I love that, I had a similar thought. What if the bullet was inside a transparent barrel?(so that you can see the bullet with the camera). Couldn't that make the bullet fly nice and straight out of the barrel since the barrel could act as some kind of chamber where the gas that's expanding keeps trapped inside shooting the bullet out the other way. It could actually shoot the bullet out further perhaps. Connect that barrel to the back plate with the hole and that should keep most of the propellant and gas between the bullet and the inside of the back plate, this could ignite the propellant more creating more gas, shooting the bullet even further! Note on the back plate hole: it should be smaller than the hole created inside the casing after the percussion cap flies out so that the percussion cap also stays inside the barrel with the back plate acting like the back plate, keeping the explosion and gas trapped inside the chamber even more.
Something just seems right about somebody with Dan's career experience outside of The Slow Mo Guys getting to see this footage firsthand. I enjoy hearing his genuine excitement and fascination by what he's learning!
@@iyzyz he spent a few years serving in the Royal British Army. I forget his exact specialty, but he was something of a ballistics and firearms expert during his several years in the military.
That last macro footage looks massive. The graininess makes me think we are looking at some disaster that's happening on another planet or deep underwater.
Dan is genuinely such an expert and it's so cool to see. To see someone you watched as their much younger self being sort of reckless but adventurous into an expert who is adventurous but very careful so so cool. Love you guys.
That probe shot was insane - it reminds me of the physical based special effects combined with early CG in something like Red Dwarf but how the creators imagined it.
9:00 It might interest you to know, given the distance that this bullet traveled, that there was pistol dueling as one of the sports in the 1908 Olympic Games. The two "athletes" would actually shoot at each other, but the bullets were made of wax and propelled only by the primer with no gunpowder in the cartridge. They did also have protective gear.
@@victorfox9623 I was about to tell you that a pace is two steps, but it's been so long since I did anything resembling scouting that I double-checked. According to Wikipedia, it can be either. I'm in the US, and was taught two steps is a pace. en.wikipedia.org/wiki/Pace_(unit)
Really the editing team here needs a buttload of credit for the epic attention to detail in the sound fx during the slomo sequences. Obviously (and I hope most people know this of course lmao) the sounds aren't recorded in slow motion too or something, but are edited in afterwards. And they pay so much attention to every little thing happening on screen, the flecks of particles spraying, the casing smashing into the gun barrel, the flames igniting of the propellant, even a little "thwack" when the sticky pad rotated and slapped the gun barrel too lol. It's really super fun and I hella appreciate that attention to editing for a much more enjoyable viewing experience.
"he sounds aren't recorded in slow motion too or something, but are edited in afterwards. " Are you sure about that? I;ve taken ultra slow motion videos on my Android of my dogs and I hear the sounds recorded in slow motion, the sounds almost seem amplified because I hear dog's toe nails actually making scratching sounds as they run on the concrete
@@HobbyOrganist Unless you paid an obscene amount of money for a phone that has a high speed aperture, I highly doubt you got over 300fps. Dedicated high speed cameras don't have microphone input. The audio is recorded separately and then slowed down to match the video by the millisecond. Most android phones don't even have refresh rates above 144hz, and that's on the pricey ones ($1k and above), so its very unlikely that they'd have apertures capable of much more than that.
Seems to me like a security feature, having the ignition cap blow out if there's nothing to hold it in place, to ensure that people don't get hurt when they're playing around with these bullets.
I don't think they are intentionally designed to blow out for safety, it's just that the primers and bullets would be harder to manufacture if they were crimped in place more securely
@@paullockyer7230 I would say it's probably more common than not for military ammo fwiw. Last thing you want is loose primer cases floating around the innards during an engagement.
Twinrehz - primers are crimped in when the application calls for high reliability. They protect the gun not people playing around doing wrong things wrongly.
@@paullockyer7230 yeah true, I was more meaning crimped in securely enough to affect the proposed 'safety feature' of having them blow out. I reckon that would need a decent change to the primer and crimping compared to how they do it for military ammo.
I'm amazed that worked lol. This whole concept reminds me of that video of a classic doom mod where one of the "shotguns" is literally just a hammer and a shotgun shell.
Dude the macro shot is incredible! If you ever ask yourself "should we try the macro lens", the answer is yes. Always loved your videos guys, right from the beginning of this channel
I remember Mythbusters cooking off some centrefire bullets (literally) in an oven, and they found that the case shatters before the bullet leaves the casing. I was completely expecting that to happen here, but I totally did not expect the primers to leave the casings first to give the expanding gases a way out! This was an amazing and insightful video!
Quite likely that the cooking in an oven weakens the metal casing, so by the time pressure/heat build up enough to ignite the propellant, the casing is too weak to hold itself together before it pushes the bullet away. Setting it off normally, the casing is just fine, which is a good thing. If the casing were sometimes too weak to contain the energy of the propellant and fail while inside a gun, you’d have a nightmare of a jam to try and clear out, shards of broken brass clinking around inside of the gun.
@@ShadowsOfTheSky I also wonder if heating it to the point that the gunpowder ignites would cause more of it to ignite at the same time, making a larger explosion overall than this one, where only a few grains seem to go. But yeah, it's probably more the weakened, more pliable casing.
Here's another thought: maybe the pressure of the primer is pages the printer and bullet out, so the gun powder never has a chance to ignite. Speer used to make special practice agni that used a plastic bullet, and only the primer (zero gun powder). It would throw that plastic bullet at high speed, but even a heavy bullet would be pushed out by the primer alone. Likewise, Aguila makes 22LR ammo called Colibri that launches a 20 grain bullet at 700 feet per second, using only the primer. (A normal 22LR bullet is 40 grains at 1100+ FPS, so Colibri is much less powerful than standard, but also much more powerful than you might guess.)
@@cymond That makes sense as a theoretical argument, but I’ve set off rounds not in a barrel myself where the primer didn’t pop out, and the casing doesn’t shatter. I suppose it’s possible if you used the powder for high velocity round but with a heavy bullet, but I imagine the primer will pop off or the round will be pushed out before the casing fails. I imagine it’s a combination of the metal being weaker at high temps, and also what @MusicalJackknife said above, because all the gunpowder was heated equally, as soon as the reaction started it all went up instantly, creating way more pressure before the expanding gases even had time to push the bullet or primer out, and the case just failed.
@@vtwinner and what does that have to do with anything? The point havocgear made is that one of the purposes of the firing pin being fixed forward after shooting is that it holds the primer in place. By holding the primer in place, the forces of the explosion are instead directed to the least path of resistance. The path of least resistance being the projectile that is only held in place within the cartridge by friction.
@@vtwinner The pin holds the primer, you dingus. You see that little cylinder that keeps flying out the back of the round in the video? That's the primer.
i love shots like this, where you see the hammer slam forward, and before the pin actually engages and fires the round, you see the Hammer already springing back from the impact, i love those shots
This makes full auto guns even more impressive. To fire a bullet, open and expend the empty cartridge, replace a new one, close again to allow the proper pressure for the next bullet in rapid succession
It’s even crazier to think that we’ve had machine guns since like 1880ish. Since the Maxim machine gun was invented around that time were nearing almost 140 some odd years of machine gun tech
Yeah they’re the only ones I can think of.. I’m sure there is 1 or 2 more I just can’t think of them off the top of my head.. I’m so glad TH-cam isn’t the way it was back then.. there were some good things about old TH-cam but overall I think it was worse than new TH-cam
@Ben Dover Its always laughable when people think a bunch of militia with hand held weapons they have a chance against the might of the US military. 😂😂🤣🤣
oooo you can see the anvil come flying out. Interesting how the cup needs a secure bolt face to keep it in place so the cup (the round thing that flies out first) +anvil (three-pronged thing flying out 2nd) can compress all the ignited material forward to then ignite the powder in the casing. The first shot illustrates this so well!
Mhm, I thought it was interesting myself. And am now wondering if that’s a feature like in case it went off while not in a weapon it wouldn’t cause as much destruction with a lesser force
what i love about slow mo guys content is that most of this stuff is too fast for the human eye to see, so even though we know how most of this stuff works, we'd usually never had the chance to see it actually happen in such detail before, but this kind of footage makes it possible to like...double confirm the physics and chemical reactions of things. it makes it doubly interesting to watch for me because of that
I think it's just coincidental. You need just enough metal to make the round be durable when outside the gun, and not too much so it isn't too heavy. Also brass is very soft, so it creates a good gas seal, and also it doesn't shrapnel much.
As others have said, it’s more of a coincidence than an intentional design feature. A firearm uses the pressure of the gas directed in a uniform direction out the barrel over a distance. With no barrel all the forces dissipate in random directions.
It's not engineered to do that. The brass case is a gasket, a sleeve that is supposed to expand to the walls of the barrel or charge hole, and the pressure builds up. Having the cartridge outside of a chamber simply stretches the gasket, which expands as far as it needs to. It is equivalent to pushing against somebody with an open palm, 5# of weight as opposed to pushing a knife against a person at 5# of weight. It has to be focused.
The majority of the propellant burns inside of the barrel, which is essentially a pressured chamber that allows for immense internal heat that forces all the powder to ignite. Pistol powder burns quicker but it’s still proportionally insufficient for the centerfire rounds. Great stuff!
To better elaborate, what is holding this round functionally back isn't a barrel, it is a chamber. At minimum you would need something to hold the primer in the primer pocket. This would allow it to build pressure, until the casing ruptures in a very dangerous way because there is no chamber wall supporting it. But even just a supported casing with no barrel will likely be enough for deadly kinetic energy. The barrel's purpose is to accelerate and stabilize the projectile. The back area of the bullet will have this immense column of pressure pushing it down the barrel (that will dissipate as it moves down the barrel, which happens fast in pistol calibers because they lack powder capacity and are generally very 'overbore' or straight walled, so peak pressure is reached immediately and then pushes on a relatively big surface area, a big contrast to some rifle rounds that hold lots of powder and fire small diameter projectiles).
I know a person who purposefully struck the primer on a .22 caliber as a teenager. The bullet projectile is heavier than the casing thus most of the energy is delivered to the casing. In his case the .22 casing flew backwards with enough power to penetrate his eye. He now has one good eye and one false eye and is in his 60s.
Gav did say "It busted the end of the gun". Dunno what he was talking about, but I interpreted it as the grip busting. That shot was really quite something.
Amazing footage!! Would love to maybe see it revisited but with a backing with a hole behind the bullet so the cartridge can't fire backward. (i.e. using the 1" gun as a proper hammer replacement) I wonder if it's also possible to find a clear (plexy or something stronger) barrel so we could observe an amazing Slow Mo of the bullet taking off?
Or they could use a ballistic gel block. Embed the 9mm round in the block, and then fire the tiny gun into the back of the 9mm case. Added benefit would be to capture the 9mm projectile.
th-cam.com/video/7pOXunRYJIw/w-d-xo.html This is kind of close to what you're saying. He puts a see through suppressor at the end of the barrel so you can see what all the pressure and gasses do behind the bullet
I love how much real scientific advancement and understanding could be done with these slow motion cameras. And then Gav and Dan just use them to look at cool stuff for the TH-cam public
Haven’t watched one in years. Love to see the boys going hard still making amazing footage. Also laughed very hard seeing Dans classic lab coat. Not much of a coat anymore lmao
Tiny gun makes an appearance again, I'm so happy! The previous tiny gun video is one of my favourite, the sense of scale gets completely flipped in slow-mo, plus the damage it made! Fascinating 💞
Jesus is the only way to healing, restoration and salvation to all souls. Please turn to him and he will change your life, depression into delight, soul heading from hell to heaven all because of what he did on the cross “Whoever calls upon the name of the Lord shall be saved” Romans 10:13
This taught me a lot about the mechanics of recoil! The only thing I would have wanted to see was if the cartridge was immovable/clamped in place, how much farther would the bullet fly. This sort of mythbusted movie scenes involving bullets in a fireplace.
So my young nephew actually threw a handful of 22 bullets into a campfire. They steered clear of it for a while, but could hear the rounds going off every few minutes for a bit. It was in a very wooded area and one of the rounds ended up hitting a pine tree close by knocking a piece of the bark off. While it's definitely nowhere near the power compared to firing from the gun, it could still do some damage to a squishy human.
If you guys want to try this again, use military ammo, which has a crimped in primer, which should prevent the primer from coming out the back and will likely send the casing backwards even faster. The casing will almost always go farther/faster than the bullet because the casing is lighter than the bullet, as you have already noticed. Cheers, jc
many bullets have been fired at shorter distances.... sorry to be morbid, but they press them to the target so they dont miss and only injure themselves....
@@AndrinoiaXO a bullet has not been fired if it hasn't left the casing... it was just nudged.. that one anyway...... the cap was fired... the bullet not so much
Percussion cap is still correct, primer is just more commonly used when referring to cartridges. They were sometimes referred to as "percussion primers" on percussion muzzleloaders back in the day as well.
The distinction is the type of ammo. For this 9mm it's a primer. Percussion caps are used in lower tech muzzle loaders. I don't know the internal differences, but they are a different style of tech
I would love to see a version of this with the casings anchored, which would be a much closer comparison to what happens in a gun! Maybe for the CF 9mm the anchor would include some overlaid prongs to keep the cap from popping out!
It wouldn't be too much different from what's happening here. The projectile would probably travel further, but the majority of the energy will be released into the air when the projectile is out of the casing.
The same thing would occur. The slight factory crimp on the bullet is tighter than the push fit of the primer. It is one of the MANY reasons military rounds crimp and seal the primer pocket
@@RevDrTarr That's true. It's why short barreled firearms firing high velocity bullets (meaning a small projectile and a lot of powder pushing it) have a much larger muzzle flash. Unburnt gasses and even some powder.
I'd like to see that as well, it would be very different because a lot of that energy is pushing that very light brass back faster than it's pushing the projectile. It would force what little energy is produced to push only the projectile. Still without a barrel and back plate in the gun containing all that energy the round would be non lethal speed but faster.
@@connorgorham5592 Actually slow motion videos of bullets in clear barrels, if you could do rifling in a clear barrel would be incredible footage, great idea
So, the question that is the title has been answered: Yes, it can. However, without a barrel to channel the energy, or something to hold the casing in place, Newton's 3rd Law enacts itself on the bullet _and_ casing, sending both flying in opposite directions with equal momentum. Perhaps a makeshift gun barrel would solve this? Seeing a micro gun actually fire a bullet at speed would be awesome!
This would only make the bullet travel a bit further and faster though, nothing like being in a barrel. The whole point of this photography is seeing how the rear of the bullet behaves when there is nothing for it to push back onto, which of course is how it can fires so fast usually.
awesome stuff guys, I like the idea of seeing "inside" a gun barrel. You need to have an acrylic barrel made for a smaller caliber, then you'll be able to film it from chamber to muzzle.
The trick here would be that the barrel and chamber would have to be _stupid_ thick compared to a steel barrel and chamber. Even with small caliber rounds, you're still (briefly) looking at ten to twenty thousand PSI as chamber pressure. From what I've been able to look up (if I'm reading it correctly in the first place), steel is _at least_ four or five times stronger than acrylic or polycarbonate in this kind of application...
Incredible slow mo shots as always! I was just wondering if the second bullet has enough energy to trigger a bigger bullet in a chain of 3 or even more... that might be worth to try.
They would probably have to do some kind of barrel to hold the casing but it would be really cool if they could go from the tiny gun to bigger and bigger bullets all the way to an artillery round
likely not because I don't think the bullet would trigger the the primer of the next bullet. its too large to hit the primer unlike a firing pin or the tiny bullet from the tiny gun
This is amazing. the last shot could be a good idea for a movie shot. As Dan stated, it looks like you are inside the gun. I can see a movie wanting a shot similar to this to get away from CGI.
The results starting at 3:20 raise a couple of interesting points: - The percussion cap, in a sense, acted like a miniature shaped charge blowing back at the 2 inch gun. And the percussion cap is designed very much like the shaped charges the Slo Mo Guys used in another video. - This demonstrates that the hammer on a gun has a function perhaps not recognised before. The presence of a heavy, solid piece of metal reflects blowback and directs energy forward, much as the gun barrel contains the explosion. Both of these increase the forward velocity of the bullet and also help to ensure full explosion of the gunpowder charge in the cartridge.
This stuff amazes me every single time. Each and every video is just mind-blowing! Something about seeing everything happen in a speed that we can visualize when normally that event transpires in a mere fraction of a fraction of a second is just... it's absolutely stunning every time!
When the .22 was fired it was a great demo of conservation of momentum! The bullet which is quite a bit heavier than the casing moves much slower than the casing does away from the explosion, as they both receive roughly equal force but take less overall force to accelerate the lighter projectile, being the bullet casing.
8:15 yes actually my experience with this is also that the gunpowder from a bullet burns rather slowly, nowhere near as fast as the silver powder from heavy fireworks. So I suppose it needs the pressure from the gun barrel and also the firing cap also needs the gun chamber to enclose it. The small calibre bullet uses a much more explosive type of powder (for the cap at least), assumedly because the calibre is so small it needs this to get similar velocity as bigger bullets
This it maybe the most incredible video I’ve seen from you guys. It was absolutely fascinating. I grew up using various rifles and guns on a farm, and always referred to a .22 at a “twenty-two”, so until you showed the bullet I didn’t actually know what you were talking about when you said “two-two” haha. Must be a US/UK thing ~Trav
What's funny is that despite them not using inches across the pond, they referred to the caliber the way the measurement would be read, as in "point two-two-inch", whereas we, the ones that use inches, refer to it as "twenty-two".
“Still active” that was a sad jab at yourselves, but you guys are still great to watch and I love how you guys can keep making new content even after the channel being so old!! Love you guys!!!
i cant believe how long these guys have been around. They feel timeless how long ive been watching them. I think i was 11 or 12 when i saw their videos way back, im 21 now
In England I've never heard it referred to in any other way. We don't have guns (mostly) and .22 is the most common form of air rifle lead pellet here. Maybe that's why? I remember learning that term *very* young
![PASULOL รามเกียรติ์ ตอนที่ 4 นนทกพบรัก [Ramakien Ep.4: Nonthok in love]](http://i.ytimg.com/vi/tMUQgmZzf_A/mqdefault.jpg)
Pay no attention to these scam accounts using the same name and picture as this account in the comments. Unless "The Slow Mo Guys" is in a bubble with a check/tick mark next to it, it's not us. I will never contact you on any platform with a free gift or any offer like that, as much as I love you. I know most people already know this but I've had a few emails recently where people seem to have fallen for it. Doing my best to ban them from the channel but it's hard to stay on top of all of them. Be safe out there my friends! - Gav
First time I've seen a TH-cam channel acknowledge this problem that has been going on for quite some time now
@@Johannesburgus the slow mo guys are just real MVPs
Try it with a 12 gauge shell.
@@CryMoreQT 🤓 Well actually, since it’s a decimal, saying two two is technically more accurate then twenty two. According to my research all Brits say it this way. Sorry, I had to put on my geek glasses for that one…
Hey would y'all be interested in filming one of my catapults, or trebuchet? Here's a couple of short videos of the catapult I'd like to see in slow motion. It's transonic, but I can get it supersonic. th-cam.com/video/7NF4FhVHqp0/w-d-xo.html th-cam.com/video/cMx0qRwzZwg/w-d-xo.html
These guys are some of the only OGs of youtube still making stuff. not only that, their content has just gotten better and better
Cold ones is great
@@JimboJuice _Look at this little egg fella_
@@PraiseTheSun02 he's even got a cool hat
and they have not resorted to turning woke either to appeal to advertisers demands
@@girlsdrinkfeck Fax, big respect on Max and Chad, they just do what they want to.
That macro shot with the probe lens is absolutely incredible!
Completely! It's one of the best things my eyes has ever seen!
It really was. I'd love to see them explore that more with better lighting and slower frame rates
They should have gone and shot at the bullet side too
Reminded me of a CGI movie shot
A very cool reminder of how relatively soft copper is.
How much could this be escalated? Like a domino effect of bullets from the tiny round up to a tank shell.
10megaton.
The most dangerous video. Loose bullets firing bigger, loose bullets
what a good idea!
I think unless theres another barrel its going to immediately fail.
@@LexanderMiller well potentially. As you saw with the 9 mm it was traveling extremely slowly. While it travelled a fair bit it could hardly be considered deadly or even dangerous. For a bullet to be dangerous it needs to be traveling very fast. Though it may simply be impossible for a 9mm bullet to actually hit the primer of say a 10mm cartridge. Would be an interesting experiment. But dangerous? Not as dangerous if these were being fired from out of a chamber and barrel.
It amazes me that after all these years they continue to make consistently high quality content
Yeah even going through the "TH-cam Originals" experience somehow couldn't corrupt these two.
These are solid men right here.
Jesus is the only way to healing, restoration and salvation to all souls. Please turn to him and he will change your life, depression into delight, soul heading from hell to heaven all because of what he did on the cross
“Whoever calls upon the name of the Lord shall be saved” Romans 10:13
@@HaroutBlack cool 👍
@@ChadDidNothingWrong well it never corrupted gmm or pewdiepie either
you really think that? they made a 15 minutes long video just for 10 seconds demonst. . High quality means they have high tech etc? or what?
What Gav says at the end about the footage still being surprising, despite expecting it, is spot on! Each and every video, I see the title and can imagine roughly how it's going to look, but I'm then blown away by how much detail and cool stuff there is to look at. Awesome every time, and still getting better 11 years on!
Thank you for writing your comment very much to the point of what I was thinking, but could not exactly put down in my comment. Kudos.
@@TrondBørgeKrokli what this guy said.
Jesus is the only way to healing, restoration and salvation to all souls. Please turn to him and he will change your life, depression into delight, soul heading from hell to heaven all because of what he did on the cross
“Whoever calls upon the name of the Lord shall be saved” Romans 10:13
Ever since Dan and Gav got back together on camera their ideas have been absolute bangers, that shaped charge video had me chuffed
The two years of separation and lockdowns haven't been wasted 👍👍
That macro shot is probably one of the best clips you've ever recorded. Absolutely incredible
Yeah, that was something special. Very unique.
Just think about how far this specific technology has come in such a short amount of time.
It's truly amazing that we are able to capture such insanely fast events and slow them down so we can take in every step it has taken on the way while maintaining such detail. It's just beautiful..
Looks like an intro for a show
whoa, until you see it 😍
6:53 “i wasn’t looking at it . . . with my eyes”
thanks for clarifying, dan
We can all agree this is some amazing slow motion footage, but can we take a minute to appreciate Gav's audio design in these videos?! I remember a video some time ago where he explained how he adds most of the audio in these videos and this one is so incredibly satisfying!
the sound as the hammer struck on that delayed shot was one of the coolest things I've ever heard, easily
I was just thinking this. Is it the actual audio or does he add sound effects?
@@rixxey2048 he adds sound effects and also slows down certain sounds. None of the noises a real in a sense that if you slowed it down that much it wouldn't sound right
Yeah, seriously; as a hobbyist working with audio on occasion I've a good ear for sound effects and I love that there's other folks out there who appreciate them as much as I do, because holy cow does it make phenomenal difference to presentation haha
@@rixxey2048 Actual audio slowed down more than ~100X becomes so low pitched that it's beyond the range of human hearing, so they have to add the sound effects in.
I watch these guys for years and years. And still they manage to amaze me. This is one of their best videos!
One of the few channels that I haven't gotten bored of
The steel wool was the most satisfying one.
finna get dem beans on yo
I like how they actually discuss what they think happened and pretty knowledgeably as well instead of just scripting an answer to give us. They take us on the journey as they learn which is what I really enjoy.
Physics is a beautiful thing to learn!
POV: your listing without sound
Well Dan is an ammunition technician and explosives expert.
There's a type of gun that used mini rockets as ammo called Gyrojets, and they are kinda rare and hard to find, so there's precious little videos of them working on youtube, and I haven't been able to find any video with slow motion action, let alone super slow motion. A tiny rocket bullet might be something really fun to see in superslow motion, and I'd like to leave my suggestion for you guys if you think you can get your hands on a gyrojet pistol.
@@carlwheezerofsouls3273 thanks! I will!
@@IstherLord Have you ever heard of the Dardick? A semiauto revolver that used triangular rounds?
@@scottydu81 I haven't but that sounds interesting
@@carlwheezerofsouls3273was gonna comment that, OOOOOG TH-cam channel
@@scottydu81 I have, that thing is interesting, but the "Trounds" as the creator calls them, dont hold up to pressure any more because of the plastic like material their made of cant contain the pressure any more and their not something you can casually 3D print replicate in a sturdy enough material, so you likely wont find any footage of them being used
"We're the slowmo guys, still at it"
Really hit me in the feels. God I love these guys
What happened?
@@Gonzakoable theyve just been doing this for forever lol, its nice to see them still going
@@Gonzakoable Well, you know, firing bullets at bullets like this, it's sort of a miracle.
It's nice that they haven't coporiatised with, massive crew and brand pleasing etc, it's still two dudes goofing around with a high speed camera.
@@rejuvenatingsoul3498 i love them BECAUSE of it
I appreciate your gun safety Dan, even when the gun is so tiny you could accidentally swallow it, you still take it seriously. Good on you
First rule of tiny gun safety is to point it away from whoever you want not your gun eaten 🤣
Overly cautious mental illness
I was thinking the same thing. Though this is my first video, so when I saw the tiny gun as they introduced it at the start, my first reflex thought was " Gun! Don't point it to close to your buddy's face! Always treat it as if it's loaded! Wear safety glasses" 😅.
@@lukecook9421 didn't seem noteworthy to me. What about it?
@@lukecook9421 you can call it cap or primer.
This is actually a pretty good example of mass and inertia. Since the casing has much less if it is not restrained, the casing actually becomes the projectile while the bullet just kind of wanders away.
Especially with the 9mm, you really need the firing pin to hold the primer bit in place, never occurred to me
The shell will actually expand slightly inside the chamber, which makes it friction fit and fire form to the inside of the chamber. This is why ejecting spent rounds is more difficult than expecting unfired rounds (and why part of the reloading process involves recompressing the shell to its original size). If you oil the shell, you can damage some of the weaker actions because the shell becomes a projectile that slams into the back of the action.
I love how with the .22 the Bullet seems to hover there for a moment while the casing flies backward because it takes longer to overcome its inertia.
Demonstrates the law of conservation of momentum, to be precise. The bullet's mass times its velocity will be equal to the casing's mass times its velocity; since the bullet is much more massive, the casing will have a much greater velocity.
The primer does it all. The primer compound ignites, builds up enough pressure to push itself out of the primer pocket, which it can as it is not held in by a breech (Nothing to do with a firing pin). Occasionally there is enough pressure generated by the primer to move the bullet forward and the case backward, but never enough heat and pressure in the case to ignite the smokeless powder, as this needs both do that and to build up pressure. Smokeless powder is hard to ignite. Try it again with black powder as a propellant....Even in a firearm it is, by choosing the wrong combination of primer, smokeless powder and bullet-case friction possible to have a failure to ignite the powder in which the bullet just moves a little on primer pressure alone. Enlarging the confined space the powder is in, making it even harder to ignite. That js the reason why we have normal primers and magnum primers that generate more heat and pressure. So Thats why the primer pressure in the case just blows out the unburnt powder through the flash hole. The rimfire is different. No separate primer that can blow out and release the pressure, very finely granulated smokeless powder that is easier to ignite and burns faster, and this generates the heat and pressure to move the case (the primer) back and the bullet a little forward.
4:53 the propellant actually never burns, basically what happens is the primer gets hit and goes off and pressurizes the inside of the cartridge, pushing it out and back at the pinfire gun, but the pinfire gun is still not done shooting out hot gasses into the already pressurized cartridge, so that's why the first wave of powder flies out, it's like if you were to blow into a cup of flower and then a bunch of it flies back at your face. Then when the pinfire gun stops pushing gas into the cartridge, it creates a vacuum effect and pulls the high pressure air out of the cartridge and into the normal pressure air, which pulls some more of the powder along with it. I know I'm a huge nerd for this, but I couldn't help myself
The probe lens shot was fantastic: the lighting, the sense of speed from the cloud of gas spraying by, the way you can follow each step of what happens...
That macro shot is so surreal it looks like an animated scene. Like a bulkhead in a cosmic sandstorm
That was a fraud be aware
@@arindas8357 Okay, i'll arrest you then.
😅
I thought the little sparks were neat looked like sum from star wars
Thousandth like
That shot of the 22lr brought back memories. When I was younger and less careful, I decided to shock a 22lr with a big capacitor. It set the bullet off, and the casing and bullet flew in opposite directions. However, the casing flew with such speed that it ripped a line through the top of my finger, and I was convinced I was going to lose my finger. Luckily it was just a mere flesh wound. Those casings can cause serious damage!
yes, need more savety
Tis' BUT A SCRATCH
I had a similar experience smacking a 12 gauge shell capped off on a coffee table it threw the percussion cap through my hand, I didn’t realize because it happened so fast until I started seeing drops of blood
@@arizonaballistics bruh
@@arizonaballistics like literally through your hand?
The “percussion cap” is called a primer, the round thing with the 3 holes is called the anvil.
When a gun fires normally, the primer still has the firing pin against it to prevent it coming out, but occasionally you have a primer rupture, and just like here, the powder burns, but the path of least resistance is out the primer pocket
That is exactly what happened. I have heard of this happening but I have never witnessed it.
There is also the problem of not having an enclosed chamber. Part of the purpose of the barrel in a firearm is to prevent the pressure from blowing the unburnt powder away. With an enclosed chamber + barrel, the powder is still in the enclosed space catching fire. You could probably prevent the primer rupture by using rimfire instead of centerfire, but you would still have the problems of pressure and unburnt powder escaping out the front.
@@ShaggyRogers1 you still get rims popping with rimfire.
Percussion cap cus their brittish
@@S.kolenshnikoff they’re Australian
As someone who loves the engineering and physics involved in firearms just as much as actually using them, I find this absolutely fascinating. I've never actually considered what might happen to a round if ignited without the containment of the chamber and barrel. That was more epic than I would've imagined, every result of that was interesting in a different way. The tiny bits igniting and propelling the other bits out in two separate streams, the percussion cap flying back and the case separating from the bullet at nearly the same speed, the rimfire actually firing with enough force to dent the case and propel the bullet. Absolutely amazing, thanks for that one guys.
Many people perform this experiment by lobbing some 22lr rounds into a fire while partying.
@@Hawk7886 Yeah ...22lr?....My brother and i tried this, its not as much fun when using artillery shells...RIP bro, you are missed!!
You never considered what might happen for a round to go off outside the gun, are you an NPC?
Wow...
As I said above - Kinda disproves the myth that cartridges in a fire shoot the bullets everywhere. Without the barrel to direct the force, the casings just blow off.
That macro shot with the probe lens might just be the single best shot you two have ever done. Truly breathtaking
My jaw literally dropped...
It's actually nearly unbelievable how far slow motion technology has come in such a ridiculously short amount of time!
it was like a movie scene suddenly in a middle of a dessert.
True!
It would be interesting to see how far the bullet would go if you could put a backing plate behind it so the shell can’t come back towards the gun, a plate with a hole you’re shooting through to set off the primer. I think a lot of the energy is split sending the casing backwards and the bullet forward, obviously it wouldn’t go as far as a sealed barrel but I wonder if it would go half as far or how much lower the velocity would be.
I think thats a great idea. I made the same comment. Would be super interesting to see
The back plate with a hole is a great idea I love that, I had a similar thought. What if the bullet was inside a transparent barrel?(so that you can see the bullet with the camera). Couldn't that make the bullet fly nice and straight out of the barrel since the barrel could act as some kind of chamber where the gas that's expanding keeps trapped inside shooting the bullet out the other way. It could actually shoot the bullet out further perhaps. Connect that barrel to the back plate with the hole and that should keep most of the propellant and gas between the bullet and the inside of the back plate, this could ignite the propellant more creating more gas, shooting the bullet even further!
Note on the back plate hole: it should be smaller than the hole created inside the casing after the percussion cap flies out so that the percussion cap also stays inside the barrel with the back plate acting like the back plate, keeping the explosion and gas trapped inside the chamber even more.
The little gun doesn't have enough energy to push a firing pin.
Something just seems right about somebody with Dan's career experience outside of The Slow Mo Guys getting to see this footage firsthand. I enjoy hearing his genuine excitement and fascination by what he's learning!
What does he do outside of this?
@@iyzyz he spent a few years serving in the Royal British Army. I forget his exact specialty, but he was something of a ballistics and firearms expert during his several years in the military.
The British Army is actually the only branch of the UK military without ‘royal’ in the title. A consequence of the civil war.
Gav and Dan never let us down. Every video seems to get more entertaining.
That last macro footage looks massive. The graininess makes me think we are looking at some disaster that's happening on another planet or deep underwater.
The guys that animated the intro to Lord of War WISH they had this footage as reference. I wouldn't be surprised if it is used eventually.
Dan is genuinely such an expert and it's so cool to see. To see someone you watched as their much younger self being sort of reckless but adventurous into an expert who is adventurous but very careful so so cool. Love you guys.
That probe shot was insane - it reminds me of the physical based special effects combined with early CG in something like Red Dwarf but how the creators imagined it.
Dwarf has great affects for a cheap to show
It genuinely looks like CGI but it's REAL and that blows my mind.
9:00 It might interest you to know, given the distance that this bullet traveled, that there was pistol dueling as one of the sports in the 1908 Olympic Games. The two "athletes" would actually shoot at each other, but the bullets were made of wax and propelled only by the primer with no gunpowder in the cartridge. They did also have protective gear.
A pace is a single step and not two steps
@@victorfox9623 I was about to tell you that a pace is two steps, but it's been so long since I did anything resembling scouting that I double-checked. According to Wikipedia, it can be either. I'm in the US, and was taught two steps is a pace. en.wikipedia.org/wiki/Pace_(unit)
Really the editing team here needs a buttload of credit for the epic attention to detail in the sound fx during the slomo sequences. Obviously (and I hope most people know this of course lmao) the sounds aren't recorded in slow motion too or something, but are edited in afterwards. And they pay so much attention to every little thing happening on screen, the flecks of particles spraying, the casing smashing into the gun barrel, the flames igniting of the propellant, even a little "thwack" when the sticky pad rotated and slapped the gun barrel too lol. It's really super fun and I hella appreciate that attention to editing for a much more enjoyable viewing experience.
Gav as far as I know edits most of it himself. He’s done a video about his editing before
@@nz540im3 that's wicked!
"he sounds aren't recorded in slow motion too or something, but are edited in afterwards. "
Are you sure about that? I;ve taken ultra slow motion videos on my Android of my dogs and I hear the sounds recorded in slow motion, the sounds almost seem amplified because I hear dog's toe nails actually making scratching sounds as they run on the concrete
@@HobbyOrganist Unless you paid an obscene amount of money for a phone that has a high speed aperture, I highly doubt you got over 300fps. Dedicated high speed cameras don't have microphone input. The audio is recorded separately and then slowed down to match the video by the millisecond.
Most android phones don't even have refresh rates above 144hz, and that's on the pricey ones ($1k and above), so its very unlikely that they'd have apertures capable of much more than that.
@@TheDustyShredder this is incorrect, my phone goes up to 240fps (Pixel 6) and some Samsung flagships have disgustingly high frame rates
Seems to me like a security feature, having the ignition cap blow out if there's nothing to hold it in place, to ensure that people don't get hurt when they're playing around with these bullets.
I don't think they are intentionally designed to blow out for safety, it's just that the primers and bullets would be harder to manufacture if they were crimped in place more securely
@@rokoala2636 I'm not sure it's universal, but some military ammo does have the primer crimped in.
@@paullockyer7230 I would say it's probably more common than not for military ammo fwiw. Last thing you want is loose primer cases floating around the innards during an engagement.
Twinrehz - primers are crimped in when the application calls for high reliability. They protect the gun not people playing around doing wrong things wrongly.
@@paullockyer7230 yeah true, I was more meaning crimped in securely enough to affect the proposed 'safety feature' of having them blow out.
I reckon that would need a decent change to the primer and crimping compared to how they do it for military ammo.
I'm amazed that worked lol.
This whole concept reminds me of that video of a classic doom mod where one of the "shotguns" is literally just a hammer and a shotgun shell.
*th-cam.com/video/mCfYi7634rU/w-d-xo.html*
Finally it's here after so long
Wow, a trifecta of bots
"Too Many Super Shotguns"
I think there are videos of people just whacking the primer on a shotgun shell without a barrel and it basically does nothing!
@@El-Burrito To set off a primer you need at least a slightly pointing tip otherwise the force is too evenly distributed.
Dude the macro shot is incredible! If you ever ask yourself "should we try the macro lens", the answer is yes.
Always loved your videos guys, right from the beginning of this channel
I remember Mythbusters cooking off some centrefire bullets (literally) in an oven, and they found that the case shatters before the bullet leaves the casing. I was completely expecting that to happen here, but I totally did not expect the primers to leave the casings first to give the expanding gases a way out!
This was an amazing and insightful video!
Quite likely that the cooking in an oven weakens the metal casing, so by the time pressure/heat build up enough to ignite the propellant, the casing is too weak to hold itself together before it pushes the bullet away.
Setting it off normally, the casing is just fine, which is a good thing. If the casing were sometimes too weak to contain the energy of the propellant and fail while inside a gun, you’d have a nightmare of a jam to try and clear out, shards of broken brass clinking around inside of the gun.
@@ShadowsOfTheSky not enough room for a round to shatter in your chamber. at most the cassing would develop a single crack on the casing wall.
@@ShadowsOfTheSky I also wonder if heating it to the point that the gunpowder ignites would cause more of it to ignite at the same time, making a larger explosion overall than this one, where only a few grains seem to go. But yeah, it's probably more the weakened, more pliable casing.
Here's another thought: maybe the pressure of the primer is pages the printer and bullet out, so the gun powder never has a chance to ignite.
Speer used to make special practice agni that used a plastic bullet, and only the primer (zero gun powder). It would throw that plastic bullet at high speed, but even a heavy bullet would be pushed out by the primer alone.
Likewise, Aguila makes 22LR ammo called Colibri that launches a 20 grain bullet at 700 feet per second, using only the primer. (A normal 22LR bullet is 40 grains at 1100+ FPS, so Colibri is much less powerful than standard, but also much more powerful than you might guess.)
@@cymond That makes sense as a theoretical argument, but I’ve set off rounds not in a barrel myself where the primer didn’t pop out, and the casing doesn’t shatter. I suppose it’s possible if you used the powder for high velocity round but with a heavy bullet, but I imagine the primer will pop off or the round will be pushed out before the casing fails.
I imagine it’s a combination of the metal being weaker at high temps, and also what @MusicalJackknife said above, because all the gunpowder was heated equally, as soon as the reaction started it all went up instantly, creating way more pressure before the expanding gases even had time to push the bullet or primer out, and the case just failed.
Its because the hammer usually stays up against the cap, the tiny bullet bounces away so the force can go both ways
hammers hit pins that hit caps in a gun... most pins are pretty tight, much smaller than the casing and leave a centered punch in the cap...
@@vtwinner and what does that have to do with anything? The point havocgear made is that one of the purposes of the firing pin being fixed forward after shooting is that it holds the primer in place. By holding the primer in place, the forces of the explosion are instead directed to the least path of resistance. The path of least resistance being the projectile that is only held in place within the cartridge by friction.
@@ShaggyRogers1 its not fixed forward... the bullet is held by its rim in the breach, not by the PIN...
@@vtwinner The pin holds the primer, you dingus. You see that little cylinder that keeps flying out the back of the round in the video? That's the primer.
i love shots like this, where you see the hammer slam forward, and before the pin actually engages and fires the round, you see the Hammer already springing back from the impact, i love those shots
This makes full auto guns even more impressive. To fire a bullet, open and expend the empty cartridge, replace a new one, close again to allow the proper pressure for the next bullet in rapid succession
If you wanna go faster with the cycle you can go with a mini-gun ^-^
@dcoog anml definitely be interesting to see what would happen with a 50 cal
@@JerryMetal yeah nou doubt. Engineering master piece
It’s even crazier to think that we’ve had machine guns since like 1880ish. Since the Maxim machine gun was invented around that time were nearing almost 140 some odd years of machine gun tech
@dcoog anml it’s .223, and it’s almost the same round as a 5.56, so that would be a lame comparison.
These guys have been like the best TH-cam group since day one. Only dudes to last.
Yeah they’re the only ones I can think of.. I’m sure there is 1 or 2 more I just can’t think of them off the top of my head..
I’m so glad TH-cam isn’t the way it was back then.. there were some good things about old TH-cam but overall I think it was worse than new TH-cam
Its a shame they did not think to clamp the cartridge a bit so that the bullet could really fly.
the cartridge would probably explode in that case because there is no firing chamber to prevent that
@@HECKproductions the cartridge won't explode unless it overloaded. It would shoot the bullet or blow out the cap before it exploded.
It blew the primer
@Ben Dover Its always laughable when people think a bunch of militia with hand held weapons they have a chance against the might of the US military. 😂😂🤣🤣
@Ben Dover I wish Americans had their own form of internet like China so that the rest of the world wouldn’t have to engage with you
Incredibile that these guys have been going so long and can still produce content this good
@@arindas8357 yea I've reported it but YT can be slow to take this stuff down
@@Teeepan how is it fraud
@@w..r.i.z.z this was in response to a fraudulent comment that's since been taken down
7:36 - This shot is so awesome and I love the speeds of all the moving pieces.... Very nice touch, I'd love to see more of this in more videos.
oooo you can see the anvil come flying out. Interesting how the cup needs a secure bolt face to keep it in place so the cup (the round thing that flies out first) +anvil (three-pronged thing flying out 2nd) can compress all the ignited material forward to then ignite the powder in the casing.
The first shot illustrates this so well!
Mhm, I thought it was interesting myself. And am now wondering if that’s a feature like in case it went off while not in a weapon it wouldn’t cause as much destruction with a lesser force
The probe shot was nothing short of incredible. This is the kind of stuff that could be used in research. Absolutely amazing job gents
So happy to see SlowMoGuys still making incredible videos with such creative ideas behind them.
Can't wait for more
what i love about slow mo guys content is that most of this stuff is too fast for the human eye to see, so even though we know how most of this stuff works, we'd usually never had the chance to see it actually happen in such detail before, but this kind of footage makes it possible to like...double confirm the physics and chemical reactions of things. it makes it doubly interesting to watch for me because of that
That last shot looked like a shot from a movie. Absolutely incredible. 😍
These guys are insane geniuses to pioneer this concept for TH-cam.
Literally just use a slow mo camera. It’s hardly genius
I'm convinced a lot of engineering has gone into minimizing damage from a round that detonates outside of a firearm. This is really impressive.
I think it's just coincidental. You need just enough metal to make the round be durable when outside the gun, and not too much so it isn't too heavy. Also brass is very soft, so it creates a good gas seal, and also it doesn't shrapnel much.
very little actually with modern propellent, if there is nothing to direct the forces they will dump in all directions with a pretty minimal velocity
As others have said, it’s more of a coincidence than an intentional design feature. A firearm uses the pressure of the gas directed in a uniform direction out the barrel over a distance. With no barrel all the forces dissipate in random directions.
It's not engineered to do that. The brass case is a gasket, a sleeve that is supposed to expand to the walls of the barrel or charge hole, and the pressure builds up.
Having the cartridge outside of a chamber simply stretches the gasket, which expands as far as it needs to.
It is equivalent to pushing against somebody with an open palm, 5# of weight as opposed to pushing a knife against a person at 5# of weight. It has to be focused.
Do you think rounds are dangerous on their own?
The majority of the propellant burns inside of the barrel, which is essentially a pressured chamber that allows for immense internal heat that forces all the powder to ignite. Pistol powder burns quicker but it’s still proportionally insufficient for the centerfire rounds.
Great stuff!
To better elaborate, what is holding this round functionally back isn't a barrel, it is a chamber. At minimum you would need something to hold the primer in the primer pocket. This would allow it to build pressure, until the casing ruptures in a very dangerous way because there is no chamber wall supporting it. But even just a supported casing with no barrel will likely be enough for deadly kinetic energy. The barrel's purpose is to accelerate and stabilize the projectile. The back area of the bullet will have this immense column of pressure pushing it down the barrel (that will dissipate as it moves down the barrel, which happens fast in pistol calibers because they lack powder capacity and are generally very 'overbore' or straight walled, so peak pressure is reached immediately and then pushes on a relatively big surface area, a big contrast to some rifle rounds that hold lots of powder and fire small diameter projectiles).
It’s pretty impressive how such a small firearm can exist in the first place
Is this real ?
@@yuurrrrrrrr1 nahhh it’s fake
😂😂
Nice
I would say it’s average
I know a person who purposefully struck the primer on a .22 caliber as a teenager. The bullet projectile is heavier than the casing thus most of the energy is delivered to the casing. In his case the .22 casing flew backwards with enough power to penetrate his eye. He now has one good eye and one false eye and is in his 60s.
I always love those sounds you put in during the slow mo, it's so satisfying to hear
The close up footage of bullets is always so cool. Can’t wait to see more slo mo projectiles!
Imagine Walt and Jesse driving through the desert and just see these two trying to fire two bullets at eachother 😂
“Jessr look over there, those are my best customers! What are they doing jesrey?”
This is hands down ONE OF THE BEST VIDEOS ever uploaded on TH-cam.
11:41 I'm surprised they didn't notice that the force of the case hitting the gun snapped the grips in half (and unlatched the barrel too!)
they noticed it, 11:50
@@Adalgeir Jeane is talking about the guns grips breaking, not the barrel.
@Jeanne They had to readjust the gun, so they noticed. They just didn't mention it.
Gav did say "It busted the end of the gun". Dunno what he was talking about, but I interpreted it as the grip busting.
That shot was really quite something.
@@speedingatheist I think he's talking about the bullet of the small guns which got snapped in half by the casing and the small gun barrel's edges
Amazing footage!! Would love to maybe see it revisited but with a backing with a hole behind the bullet so the cartridge can't fire backward. (i.e. using the 1" gun as a proper hammer replacement)
I wonder if it's also possible to find a clear (plexy or something stronger) barrel so we could observe an amazing Slow Mo of the bullet taking off?
a plexiglass tube *might* hold up enough for a lower pressure cartridge, just the once... Would make for a pretty awesome shot too.
Yep or clamp the case in place
Or they could use a ballistic gel block. Embed the 9mm round in the block, and then fire the tiny gun into the back of the 9mm case. Added benefit would be to capture the 9mm projectile.
th-cam.com/video/7pOXunRYJIw/w-d-xo.html
This is kind of close to what you're saying. He puts a see through suppressor at the end of the barrel so you can see what all the pressure and gasses do behind the bullet
Smarter every day did a video on clear suppresors... and some of them even survive a few shots
I love how much real scientific advancement and understanding could be done with these slow motion cameras. And then Gav and Dan just use them to look at cool stuff for the TH-cam public
What amazes me more is the FPS speed. That's just freakin insane, and really cool to watch.
Haven’t watched one in years. Love to see the boys going hard still making amazing footage. Also laughed very hard seeing Dans classic lab coat. Not much of a coat anymore lmao
same
same
Tiny gun makes an appearance again, I'm so happy! The previous tiny gun video is one of my favourite, the sense of scale gets completely flipped in slow-mo, plus the damage it made! Fascinating 💞
That probe lens shot is incredible! I can’t believe they almost decided not to do that shot 😂
13:05 This shot is just unbelievable
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This taught me a lot about the mechanics of recoil! The only thing I would have wanted to see was if the cartridge was immovable/clamped in place, how much farther would the bullet fly. This sort of mythbusted movie scenes involving bullets in a fireplace.
In a fire, there is enough heat that all of the propellant ignites spontaneously inside of the case, making it extremely dangerous compared to this.
So my young nephew actually threw a handful of 22 bullets into a campfire. They steered clear of it for a while, but could hear the rounds going off every few minutes for a bit. It was in a very wooded area and one of the rounds ended up hitting a pine tree close by knocking a piece of the bark off. While it's definitely nowhere near the power compared to firing from the gun, it could still do some damage to a squishy human.
It's so impressive how you guys still find ways to create totally new, unexpected footage after all these years.
If you guys want to try this again, use military ammo, which has a crimped in primer, which should prevent the primer from coming out the back and will likely send the casing backwards even faster. The casing will almost always go farther/faster than the bullet because the casing is lighter than the bullet, as you have already noticed.
Cheers,
jc
I like how they probably actually achieved the world record for the shortest distance a bullet has ever been fired and nobody mentions it 😂
many bullets have been fired at shorter distances.... sorry to be morbid, but they press them to the target so they dont miss and only injure themselves....
@@vtwinnerthat would still require the bullet to leave the end of a barrel, at least a few inches. That bullet didn't even leave the casing.
@@AndrinoiaXO a bullet has not been fired if it hasn't left the casing... it was just nudged.. that one anyway...... the cap was fired... the bullet not so much
@@vtwinner it didn't even fully leave the casing, I think that beats it.
@@jeremybree1986 If it hasn't left the casing, it hasn't been fired, that is called a MIS-fire
Not 100% sure that "percussion cap" is incorrect, but in the US it's far more common to call it a "primer". Epic footage!
Percussion cap is still correct, primer is just more commonly used when referring to cartridges. They were sometimes referred to as "percussion primers" on percussion muzzleloaders back in the day as well.
The distinction is the type of ammo. For this 9mm it's a primer. Percussion caps are used in lower tech muzzle loaders. I don't know the internal differences, but they are a different style of tech
I’ve been watched these guys since they used to record in their grandads backyard and they still manage to blow me away every time!!! Love y’all!!!
I would love to see a version of this with the casings anchored, which would be a much closer comparison to what happens in a gun! Maybe for the CF 9mm the anchor would include some overlaid prongs to keep the cap from popping out!
It wouldn't be too much different from what's happening here. The projectile would probably travel further, but the majority of the energy will be released into the air when the projectile is out of the casing.
The same thing would occur. The slight factory crimp on the bullet is tighter than the push fit of the primer.
It is one of the MANY reasons military rounds crimp and seal the primer pocket
@@RevDrTarr That's true. It's why short barreled firearms firing high velocity bullets (meaning a small projectile and a lot of powder pushing it) have a much larger muzzle flash. Unburnt gasses and even some powder.
I'd like to see that as well, it would be very different because a lot of that energy is pushing that very light brass back faster than it's pushing the projectile. It would force what little energy is produced to push only the projectile. Still without a barrel and back plate in the gun containing all that energy the round would be non lethal speed but faster.
@@joegesch8589 exactly!
I would love to see the same experiment but with a barrel around the bullet. However it would probably be a lot more dangerous.
How do you plan on seeing what happens then
@@WayStedYou make it clear
@@connorgorham5592 Actually slow motion videos of bullets in clear barrels, if you could do rifling in a clear barrel would be incredible footage, great idea
So, the question that is the title has been answered: Yes, it can. However, without a barrel to channel the energy, or something to hold the casing in place, Newton's 3rd Law enacts itself on the bullet _and_ casing, sending both flying in opposite directions with equal momentum. Perhaps a makeshift gun barrel would solve this? Seeing a micro gun actually fire a bullet at speed would be awesome!
Equal momentum, not equal speed
@@federicorios1140 thank you, comment will be edited
lmao, imagine the mini gun having a big barrel right in front of the tiny barrel and doing a chain reaction of bullets.... would be awesome
Maybe just weld the bullet by the casing to a fixed metal pole that is strong enough to not move backwards, no idea if the weld would hold or not.
This would only make the bullet travel a bit further and faster though, nothing like being in a barrel. The whole point of this photography is seeing how the rear of the bullet behaves when there is nothing for it to push back onto, which of course is how it can fires so fast usually.
awesome stuff guys, I like the idea of seeing "inside" a gun barrel. You need to have an acrylic barrel made for a smaller caliber, then you'll be able to film it from chamber to muzzle.
The trick here would be that the barrel and chamber would have to be _stupid_ thick compared to a steel barrel and chamber.
Even with small caliber rounds, you're still (briefly) looking at ten to twenty thousand PSI as chamber pressure. From what I've been able to look up (if I'm reading it correctly in the first place), steel is _at least_ four or five times stronger than acrylic or polycarbonate in this kind of application...
Also, the crud left by burning propellant would instantly turn it black.
Incredible slow mo shots as always!
I was just wondering if the second bullet has enough energy to trigger a bigger bullet in a chain of 3 or even more... that might be worth to try.
I had the same thought, would be cool video!
They would probably have to do some kind of barrel to hold the casing but it would be really cool if they could go from the tiny gun to bigger and bigger bullets all the way to an artillery round
@@BernardoPC117 I think they could've gotten away with a thick wall acrylic tubing, just to keep all the bullets in line
likely not because I don't think the bullet would trigger the the primer of the next bullet. its too large to hit the primer unlike a firing pin or the tiny bullet from the tiny gun
I wanna see if they can domino the bullets to fire a large calibur bullet!
"Budged the bullet" was my favorite phrase to come out of this
This is amazing. the last shot could be a good idea for a movie shot. As Dan stated, it looks like you are inside the gun. I can see a movie wanting a shot similar to this to get away from CGI.
The results starting at 3:20 raise a couple of interesting points:
- The percussion cap, in a sense, acted like a miniature shaped charge blowing back at the 2 inch gun. And the percussion cap is designed very much like the shaped charges the Slo Mo Guys used in another video.
- This demonstrates that the hammer on a gun has a function perhaps not recognised before. The presence of a heavy, solid piece of metal reflects blowback and directs energy forward, much as the gun barrel contains the explosion. Both of these increase the forward velocity of the bullet and also help to ensure full explosion of the gunpowder charge in the cartridge.
I love how he said, "I wasn't looking at it, with my eyes" Like there is something else we might have thought he was not looking at it with
Keep it Up. Too much love experiments 🎉🔥
This stuff amazes me every single time. Each and every video is just mind-blowing! Something about seeing everything happen in a speed that we can visualize when normally that event transpires in a mere fraction of a fraction of a second is just... it's absolutely stunning every time!
7:24
Love how the bullet casing closes the mini gun.
So cute❤
It throws me off every time I hear someone call a "twenty-two" a "two-two." Great video. Love it.
that little gun is as reliable as a typical new ford truck.
When the .22 was fired it was a great demo of conservation of momentum! The bullet which is quite a bit heavier than the casing moves much slower than the casing does away from the explosion, as they both receive roughly equal force but take less overall force to accelerate the lighter projectile, being the bullet casing.
I love the genuine curiosity of these guys. It's infectious. Thanks for another piece of quality edutainment.
8:15 yes actually my experience with this is also that the gunpowder from a bullet burns rather slowly, nowhere near as fast as the silver powder from heavy fireworks. So I suppose it needs the pressure from the gun barrel and also the firing cap also needs the gun chamber to enclose it. The small calibre bullet uses a much more explosive type of powder (for the cap at least), assumedly because the calibre is so small it needs this to get similar velocity as bigger bullets
Probably one of your coolest videos ever!! It’s cool to see what actually goes on when a bullet is lit
2:37 That gunshot sounded very much like an old 1960s Spaghetti Western.
This it maybe the most incredible video I’ve seen from you guys. It was absolutely fascinating. I grew up using various rifles and guns on a farm, and always referred to a .22 at a “twenty-two”, so until you showed the bullet I didn’t actually know what you were talking about when you said “two-two” haha. Must be a US/UK thing
~Trav
What's funny is that despite them not using inches across the pond, they referred to the caliber the way the measurement would be read, as in "point two-two-inch", whereas we, the ones that use inches, refer to it as "twenty-two".
That or someone who doesn’t know guns. The sort who call a 30-06 a “three zero dash zero six”.
@@notforsaletoday1895 Dan is an ex-military ammunition technician and weapons expert. Different countries just have different terms for things.
@@GenericaQwerty I see. Interesting little difference between nationalities.
Thefootage is absolutely amazing!
Wow. The tiny gun barrel was bended (7:41) on the impact!
i love that even after all this time, they still both get utterly delighted when something unexpected happens
“Still active” that was a sad jab at yourselves, but you guys are still great to watch and I love how you guys can keep making new content even after the channel being so old!! Love you guys!!!
I've always wondered how many of their shots are used on TV and other such educational media. I was completely floored by that macro lens shot.
Your sound guy for the slow mo shots needs a raise
Gavin actually does it himself!
Well, I'm happy to see you guys are posting more videos more often!
i cant believe how long these guys have been around. They feel timeless how long ive been watching them. I think i was 11 or 12 when i saw their videos way back, im 21 now
Cool experiment! First time I've heard a .22 referred to as a "two two" before
Came here to say that
In England I've never heard it referred to in any other way. We don't have guns (mostly) and .22 is the most common form of air rifle lead pellet here. Maybe that's why? I remember learning that term *very* young
@@-Graham TWENNYTWO AU AU AU
“Seeing if you can ignite a SAM rocket with a 9mm pistol” should be your next slow mo in this series