Frank started from scratch a brand that in the meantime became iconic in the industry. Moreover, he is still responsive to retail customers like myself.
Eric, I have learned more from watching your podcast over the last year than I thought possible. And Frank, I have gone through nine of your barrels and have nothing but praise for a great product
This was one of the best interviews I've seen. I learned so much, thanks for this. Keep up the great work man, your really helping out the industry more then you know.
Thanks Eric.... I enjoyed listening to you and Frank Green ... Thank You... Especially about cleaning ... I am convinced it makes a difference....in whatever discipline you shoot .....pistol thru rifle
According to a forum Bill Calfee is one of the best .22 lr benchrest rifle builders. His specialty is lapping .22 lr bores. His guns win. So an interview might be cool.
Seeing as I'm contemplating buying a barrel for a build, good timing, hurry up and do the second vid with Frank. You've been getting the good stuff and the good people to talk about things lately, liking that a lot. THe podcast format is definitely a game changer on so many subjects these days, it is absolutely worth the expense and time to do.
Mark is a great guy. I spoke with him for a few hours about my issue. He is a wealth of knowledge and come to find out it was nothing to do with my Barrel or chambering.
.....from the cleaning aspect,...."the preferred way", as Frank described his 2 methods, the "slow" & the "quick" ways, was spot-on, of my late Fathers methods, that was drilled into me since as a really young little kid, for 15 years of constructive criticism, as I remember - from clear back in the late 60's when my Father was nearing 40 - early 40's, then,....I think now, I wish he could be 40 again in todays world, & if he wasn't such a humble person, the wealth of knowledge with foresight he had.......he would break down barriers with todays technologies, - communication abilities & competitions........seems alot of times, "some things never change", ( to a degree - except for the "innovators".....), from the aspect of hind sight - when following innovators - people ahead of their times. Imo - in the world of barrels - Frank - you are "one of those guys", descending from another "one of those guys" - Krieger himself. REALLY enjoyed listening to your wealth of knowledge Thank You Sir fer sharing.
Great interview. Looking forward to the follow up. Glad that he highlighted that it's not the bronze brush that generally causes the wear but the carbon/dirt being dragged along the surface by said brush. In a slurry with your preferred cleaning solution it becomes an abrasive. Rinsing and cleaning your brushes is important. You aren't going to put a dirty patch back through the bore to try and clean it.
The lack of currently manufactured machinery is shocking. Making good barrels is a lot of attention to detail from what I have observed over the years. We are indeed fortunate to have people willing to do the work necessary to make “good barrels”.
Only thing worse is that Craftsmen like this are a dying breed, in large part due to offshoring of manufacturing along with the "video game culture"... MAKING BELIEVE you are doing something is NOT THE SAME as doing it in REALITY.
Wow! Straight talk from someone who Really knows about the subject. Fact based knowledge, not second hand here-say. Great subject, great guy. More! Two or three more from this expert😊
Great stuff, thanks! I use 3 cleaners. Slip 2000 carbon killer, and bore tech eliminator the bore cleaner and cu+2 the dedicated copper remove. All are bore safe, non toxic, and dont stink. Carbon killer works great on carbon and shotgun wad fouling. Eliminator does well on carbon and some light copper. And for bad copper i use the cu+2. I use eliminator most as it saves time and keeps the copper fouling from building up over time. Most of my barrels are more budget tier and foul easily, so good cleaning after every outing is a must. And i cleaning guns for friends and co-workers semi regularly and most of those guns are filthy. Bote tech eliminator works so well and saves a ton of work when you follow the instructions.
How Bartlein started: 1:10 Short comment on do they still make cut rifling Machines: 2:58 Manufacturing Process: 9:18 Short Comment On Hand Pulled Cut Rifled Barrels: 11:50 Manufacturing Process Revisited: 13:40 Fluting Barrels: 20:00 Barrel Break In: 27:05 Barrel Cleaning: 31:50 Cleaning w/ Abrasives: 35:36 Bronze Brush is softer than barrel so it can’t cause damage debate: 40:33 Cleaning w/ CLR: 49:24 Putting guns away dirty: 56:20 Using a drill on a cleaning rod: 1:08:22 Boresnakes: 1:13:10 5R vs Conventional Rifling: 1:15:01 I’ve included timestamps for your convenience. However, and I didn’t think I’d say this, but I really think it would be worth your time to watch the full video.
To Cleaning the brush. I personally change brushes and clean all the brushes at the end. That way you are not reintroducing carbon and copper back into the barrel. BTW It is greatly appreciated that you guys are sharing all of this information. Thank YOU!!!
Awesome podcast! Tons of great info from an expert in barrels. I really liked the part on barrel cleaning. Glad to hear I’m not the only one that likes Remington 40-X bore cleaner. I use it very sparingly and consider it to be an abrasive. I’d like to hear more about Bartlien carbon fiber barrels and accuracy compared to stainless barrels. Also the 400 steel Bartlien is using and it’s advantages.
That's was one of the best interviews, Frank certainly has passion for what he does and is very informative. Would be great to see a video with neary Eric and Frank. All the best 👍
I was enjoying this thoroughly, and was not going to comment...until they brought up the 1/4 MOA. I bought two Bartlein 5R 1-8 twist .224 barrels for my AR15 Highpower competition rifle in about 2006. I put one on the gun and took it to the range with my standard short line (200 & 300 yd) ammo. After minimal break-in, I shot a 5 shot 1/2" group at 200 yds. That is 1/4 MOA, and the rifle will still do it, if I do my part. Their barrels are phenomenal.
In my past life before I retired I did alot of oil analysis and we paid close attention to the soot levels for wear, so making sure to remove loose carbon makes sense at the start of cleaning, think about what diamonds are made of carbon.
The interviews are so full of information and ideas I find myself viewing them 2-3 times. My second look at this one peaked my interest in the comment regarding gain twist rifling! A subject that I am curious about. Hope you two in next interview delve into this subject!
Erik, as a 3rd shifter I despise you. I am up for 14 hours and then right before I go to bed you post a video that I can’t not watch. Thank you for the amazing content and what you do for us
SigmaBallistics you made me really laugh out loud! I'm not on the graveyard shift any longer but I know what you mean when your dead beat and your favorite subject comes on.
Service after the Sale is a critical part of a barrel purchase. Manufacturing problems happen, part of life. How you handle those issues is a critical part of my choice in a barrel purchase.
Being from Wisconsin is one thing. Thinking that people from Wisconsin "speak properly" is quite another. I didn't think that anyone - even Wisconsinites - thought that Wisconsinites were anything but abusive to the spoken English language. People understand them well enough, though, so it's not a big deal. But to pretend that it is "proper" is downright delusional. It is the rough equivalent of pretending that a man with his genitalia tucked between his legs is as much - or even more of - a woman as anyone else because they can swim a 200m freestyle faster. Sheesh.
@@G5Hohn And thank you for showing the world that you have no attachment to reality. Do you actually own a foam cheesehead? You do, don't you? And you think that you are the arbiter of what is and what is not humor?
These are awesome. Keep it up. I know you ask the person you’re interviewing for who they would like to recommend for the next podcast. I recommend Robert Waggoner and Mark from SAC.
Its interesting that Frank likes Hoppes #9 so much. I have a large bottle and used Hoppes exclusively...until I bought a borescope. My carbon barrels (not stainless) were loaded with copper and carbon fouling. I was shocked actually because I kept them clean between range visits. Now I use Wipe Out followed by Bore Tech Eliminator. Huge difference. I now have 3 Bartlein barrels and will do a comparison to see if Hoppes works better on stainless than factory carbon barrels.
Frank, great conversation and I would love to know more about that 200yrd bullet test where they photographed the bullets in flight. Please let us know where we can find that info when it is released, I think it could be really useful information to take a look at.
I've recently bought some IOSSO after seeing Jack Neary and Bryan and others talk about using these pastes. I did a short test on the outside of a barrel with IOSSO and a Dremel polishing wheel. ABSOLUTELY it is abrasive will will polish the bore just like Flitz or something else would. However, like Frank says here, it comes down to how much polishing you do. I think if you don't get carried away and use patch after patch after patch of the stuff, it's fine. I go by cleaning rod feel. I only use the IOSSO when the rod tells me the solvent isn't getting it all out.
This highlights my concerns with used rifles, not how they've been shot but how they've been cleaned. I'd rather buy one that's not been cleaned much than one that's been cleaned too much. I use VP90 in my cabinet.
Listening to Frank talk about 4 (conventional) vs 5R and the highspeed photography having burrs on the bullets of the 4, I believe the burrs stem from the sharper bottom corners (and possible poor sealing/gas leakage around the jacket) of the conventional 4 groove vs the trapezoid shape of the 5R land. I am a long-time supporter of 4 (or 6) groove barrels for opposed reamer flute contact stability (off the shelf reamers are 6 flute)......but I wonder if you have 4R style rifling if you can still get better reamer stability and more adequate sealing/easier cleaning/etc.??? Granted you still have the concern of more "squeeze" on the bullet from opposed lands engraving the bullet (as Frank pointed out). Thanks again Frank for everything.
I was helping a friend with 300 mag factory Winchester, I wish I had saved the video of borescope , From factory barrel had chunks out of the metal, only thing I could come up with was carbon from metal in the barrel itself was fracturing and coming out of the metal itself. The rifle had a host of other problems and would shoot 3 to 4 inch 3 shot groups at 100 yards, After I got all the other issues repaired and fed it some Lapua brass , RL-26 the rifle will now shoot ~.500. 3 shot groups, hell I was amazed that rough of a barrel would still shoot good enough for a hunting rifle. Just lucky maybe??
Erik, check out the gunsmith of Colonial Williamsburg. It was made in like the 1960s I think and I noticed it was on You Tube recently. It shows them using the old rifling machine making a flintlock rifle the old way. Very interesting. I've been there in recent years and the gunsmith shop is still operating there.
Finding this episode extremely fascinating, even if there weren’t any hard conclusions drawn, with the exception of the potential for negative affects from expeditious and severe bore maintenance methods. I don’t know that I’ve been able to understand when the methods cross the line into severe. Maybe anything beyond normal patching / cleaning, and the use of anything chemical that can attack bore metallurgy if given too long a dwell period or residue not being entirely removed? Regarding bore finishes, y’all got me thinking that there may be a similarity to the methodology of engine cylinder bore honing currently happening with CNC honing equipment / piston ring technology, to accomplish verifiable and consistent plateau finishes.
Surgical stainless will also rust. It's actually the cheaper 300 series stainless steels that are the most corrosion resistant. Those that are used on say tanks and containers and such. The best way to tell if a stainless steel will corrode is see if a magnet will stick to it. If a magnet will stick it's a high carbon stainless that can be heat treated and hardened.
Great video I will say this, the Cooling aspect of a Fluted barrel is 100% factually true *BUT* its soo small its a negligible difference at best because of thermodynamic laws / the way heat transfers. So when someone says that fluted barrels cool faster, technically, yes they are correct *but* again, the difference is SOOOOO small that there is virtually zero appreciable difference (difference is soo small that only the most sensitive of test equipment can display the difference). Basically, the surface area increase from adding flutes is insignificant when you factor in the small Delta T value between the barrel and the outside ambient air. The smaller the Delta T value is (which it the difference between the barrel temp and the ambient air temp in this example), the slower the heat transfer rate between the two (laws of Thermodynamics which we can not get around) and to increase the rate by a significant degree, you need a very significant surface area change. Barrels overall just do not have enough surface area to begin with for fluting to have that much of a difference to offset the small Delta T value. A way to understand the how Delta T value makes a difference that anyone can fairly easily see is the time it take an ice cube to melt in a 90°F room vs. the time it takes for it to melt in a 40°F room. Heat energy transfers from hot to cold in order to reach equilibrium and the large the temperature difference is between the two media's, the faster the heat energy transfers where as the closer they are in temperature, the slower the rate of transfer is. This is why the Ice cube melts faster in the 90° room than it does in the 40° room. The Delta T between the room air and ice cube is larger in the 90° room than it is in the 40° room. Say the Ice cube came from a freezer that was set to 20°F, in the 90° room, the Delta T value is 70° but the value for the ice cube in the 40° room is only 20° Well the same thing applies to a Hot barrel and the ambient air. If the Air is say 90° and the barrel is say 120°, the Delta T is 30° and the barrel doesn't cool very fast but if the barrel was 120 and the ambient air was 30°, the Delta T is 90° and the barrel cools much faster. Now back to the surface area, if you had say 30" of barrel length (Ø1.25" Straight contour barrel used for this example) that could be fluted and you cut 6 28" long flutes in it say on a milling machine using a Ø3/8 ball nose end mill to a depth of .125", your surface area increase is right at about 10% which might seem pretty significant but really its not, that barrel unfluted has about 118 sq/in of surface are where as the fluted version has 130 so that is only about a 12 sq/in area increase. To really get any minimal appreciable gains, you need at least a 25% increase in surface area when dealing with low Delta T values. Now on say maybe a belt feed machine gun were you are likely to get the barrel really hot (i.e., having a much higher Delta T value at the end of a string of fire), then yes, that 10% increase can be somewhat appreciable. The other thing though is a fluted barrel will heat up faster and to a higher temp for the same round count / time interval because of the lower mass. Example, two identical barrels but one is fluted, after say 20 rounds fired in fairly quick succession at the same identical time interval, the fluted barrel will get to a higher temperature because it has less mass to absorb heat generated by the firing string and thus the final temperature will be higher (remember "Heat" and "Temperature" are two totally different things). 57:20 Yep Erik, its that old saying of "enough knowledge to think that you're right but not enough knowledge to know that you're wrong". 416 Stainless has more Iron, less Chromium and no Nickel where as 300 series Stainless (like 316 commonly used in surgical and Marine industries) for one, has Nickel, has more Chromium and less Iron.
Erik Cortina, Do you remember about 2 years ago when I asked you what did you think about a Left Hand Gain Twist barrels. Ive been shooting them for many years.They are really beneficial in large calibers from 338 LM and up in my experience.The bullet does not hit the lands as hard and the gas es on the final faster twist seems to be better. I use to think theLeft hand shot better on this side of the equator and Right Hand shot better on the southern side.I dont think it now.
I’ve thrown my bronze brushes away after this video. Also I’ve learned I’m guilty of not cleaning enough, but the only cleaning I’ll be doing again is a couple wet patches of hoppes 9 followed by some dry ones. That’s it.
Like, comment, and share it with your friends please.
Frank is a wealth of information! Great interview.
Really looking forward to a round 2.
Frank started from scratch a brand that in the meantime became iconic in the industry. Moreover, he is still responsive to retail customers like myself.
Add this interview to the list of your stellar interviews. Thank you Mr. Green for taking your valuable time to educate those seeking knowledge.
Eric, I have learned more from watching your podcast over the last year than I thought possible. And Frank, I have gone through nine of your barrels and have nothing but praise for a great product
I shed a tear for each of those INSANE cleaning methods...
Have Ted from American Rifle Company on an episode! I love listening to him speak on the engineering side of actions
I love interviews with barrel manufacturers, no matter which TH-cam channel.
My favorite interview yet. As a highpower shooters it's nice to see I do everything the same way. These guys knowledge resonates throughout the sport.
Frank Gren...Thank you so much for your time and knowledge. You are appreciated more than you know.
This was one of the best interviews I've seen. I learned so much, thanks for this. Keep up the great work man, your really helping out the industry more then you know.
Thanks Eric.... I enjoyed listening to you and Frank Green ... Thank You... Especially about cleaning ... I am convinced it makes a difference....in whatever discipline you shoot .....pistol thru rifle
According to a forum Bill Calfee is one of the best .22 lr benchrest rifle builders. His specialty is lapping .22 lr bores. His guns win. So an interview might be cool.
Thank you for sharing what you know, as I have pondered these things myself for 50 years now. Great stuff!
Seeing as I'm contemplating buying a barrel for a build, good timing, hurry up and do the second vid with Frank. You've been getting the good stuff and the good people to talk about things lately, liking that a lot. THe podcast format is definitely a game changer on so many subjects these days, it is absolutely worth the expense and time to do.
Mark is a great guy. I spoke with him for a few hours about my issue. He is a wealth of knowledge and come to find out it was nothing to do with my Barrel or chambering.
.....from the cleaning aspect,...."the preferred way", as Frank described his 2 methods, the "slow" & the "quick" ways, was spot-on, of my late Fathers methods, that was drilled into me since as a really young little kid, for 15 years of constructive criticism, as I remember - from clear back in the late 60's when my Father was nearing 40 - early 40's, then,....I think now, I wish he could be 40 again in todays world, & if he wasn't such a humble person, the wealth of knowledge with foresight he had.......he would break down barriers with todays technologies, - communication abilities & competitions........seems alot of times, "some things never change", ( to a degree - except for the "innovators".....), from the aspect of hind sight - when following innovators - people ahead of their times. Imo - in the world of barrels - Frank - you are "one of those guys", descending from another "one of those guys" - Krieger himself. REALLY enjoyed listening to your wealth of knowledge Thank You Sir fer sharing.
Great interview. Looking forward to the follow up. Glad that he highlighted that it's not the bronze brush that generally causes the wear but the carbon/dirt being dragged along the surface by said brush. In a slurry with your preferred cleaning solution it becomes an abrasive. Rinsing and cleaning your brushes is important. You aren't going to put a dirty patch back through the bore to try and clean it.
Thank you for your time Mr. Green. Great conversation.
Mind blown once again! Thanks Erik and Frank. The most important point. Let the gun tell you what it wants.
Oh yeah Erik! Thanks for dropping us in this rabbit hole. I love it!
The lack of currently manufactured machinery is shocking.
Making good barrels is a lot of attention to detail from what I have observed over the years.
We are indeed fortunate to have people willing to do the work necessary to make “good barrels”.
Only thing worse is that Craftsmen like this are a dying breed, in large part due to offshoring of manufacturing along with the "video game culture"... MAKING BELIEVE you are doing something is NOT THE SAME as doing it in REALITY.
There really is only one or two gun drilling and rifling machine tool makers
That was a very informative interview guys. Frank was great with his insights and views of a barrel manufacturer, Looking forward to part two.
After listening to this interview I'm sold on Bartlein Barrels
This whole interview just flew by, I couldn't believe it was already an hour and a half
Thank you Erik and Frank!
One of the best interviews yet
Really great discussion you guys. I thought this was one of the best Eric...so much great info. Thanks!
What a wealth of knowledge.!! Outstanding resources. Thanks both of you.
Wow! Straight talk from someone who Really knows about the subject. Fact based knowledge, not second hand here-say. Great subject, great guy. More! Two or three more from this expert😊
One of your best episodes
Great stuff, thanks! I use 3 cleaners. Slip 2000 carbon killer, and bore tech eliminator the bore cleaner and cu+2 the dedicated copper remove. All are bore safe, non toxic, and dont stink. Carbon killer works great on carbon and shotgun wad fouling. Eliminator does well on carbon and some light copper. And for bad copper i use the cu+2. I use eliminator most as it saves time and keeps the copper fouling from building up over time. Most of my barrels are more budget tier and foul easily, so good cleaning after every outing is a must. And i cleaning guns for friends and co-workers semi regularly and most of those guns are filthy. Bote tech eliminator works so well and saves a ton of work when you follow the instructions.
How Bartlein started: 1:10
Short comment on do they still make cut rifling Machines: 2:58
Manufacturing Process: 9:18
Short Comment On Hand Pulled Cut Rifled Barrels: 11:50
Manufacturing Process Revisited: 13:40
Fluting Barrels: 20:00
Barrel Break In: 27:05
Barrel Cleaning: 31:50
Cleaning w/ Abrasives: 35:36
Bronze Brush is softer than barrel so it can’t cause damage debate: 40:33
Cleaning w/ CLR: 49:24
Putting guns away dirty: 56:20
Using a drill on a cleaning rod: 1:08:22
Boresnakes: 1:13:10
5R vs Conventional Rifling: 1:15:01
I’ve included timestamps for your convenience. However, and I didn’t think I’d say this, but I really think it would be worth your time to watch the full video.
Straight from the horse’s mouth. Great interview, can’t wait for the follow up. Perfect!
Definitely one of the best guests you've had on!
To Cleaning the brush. I personally change brushes and clean all the brushes at the end. That way you are not reintroducing carbon and copper back into the barrel. BTW It is greatly appreciated that you guys are sharing all of this information. Thank YOU!!!
ABSOLUTELY LOVED this conversation ❤️ 👏
Awesome podcast! Tons of great info from an expert in barrels. I really liked the part on barrel cleaning. Glad to hear I’m not the only one that likes Remington 40-X bore cleaner. I use it very sparingly and consider it to be an abrasive.
I’d like to hear more about Bartlien carbon fiber barrels and accuracy compared to stainless barrels. Also the 400 steel Bartlien is using and it’s advantages.
Thank you gentlemen this was a really great podcast I can't wait to hear part two
Awesome podcast I’m learning so much listening to you thank you very much!
That's was one of the best interviews, Frank certainly has passion for what he does and is very informative.
Would be great to see a video with neary Eric and Frank.
All the best 👍
Nice seeing you again, Frank! Your barrels are still doing pretty good, around 1/4min or better at 200yds yet.
I was enjoying this thoroughly, and was not going to comment...until they brought up the 1/4 MOA. I bought two Bartlein 5R 1-8 twist .224 barrels for my AR15 Highpower competition rifle in about 2006. I put one on the gun and took it to the range with my standard short line (200 & 300 yd) ammo. After minimal break-in, I shot a 5 shot 1/2" group at 200 yds. That is 1/4 MOA, and the rifle will still do it, if I do my part. Their barrels are phenomenal.
In my past life before I retired I did alot of oil analysis and we paid close attention to the soot levels for wear, so making sure to remove loose carbon makes sense at the start of cleaning, think about what diamonds are made of carbon.
The interviews are so full of information and ideas I find myself viewing them 2-3 times. My second look at this one peaked my interest in the comment regarding gain twist rifling! A subject that I am curious about. Hope you two in next interview delve into this subject!
Thanks Frank & Erik for Sharing Info.
Excellent info Frank! Great interview Eric!
Erik, as a 3rd shifter I despise you. I am up for 14 hours and then right before I go to bed you post a video that I can’t not watch.
Thank you for the amazing content and what you do for us
SigmaBallistics you made me really laugh out loud! I'm not on the graveyard shift any longer but I know what you mean when your dead beat and your favorite subject comes on.
WOW thanks Frank and Erik
I am glad I bought a barrel from him for my .284 Wheeler. I can’t wait to see how it shoots.
Great episode!
Excellent interview. Frank is a no B.S. kinda guy. I had no problem hearing him :-)
eric you've seen barrels , frank has seen lots and lots of barrels best guest you have had.
Great stuff. Thanks!
Service after the Sale is a critical part of a barrel purchase. Manufacturing problems happen, part of life. How you handle those issues is a critical part of my choice in a barrel purchase.
Can't wait for the next one
Excellent information. Thank you.
Fantastic information , THANK YOU
Thanks for doing this Frank! So glad to see you on Eric's channel. And as a native Cheesehead, hearing someone speak properly is refreshing ;)
Being from Wisconsin is one thing. Thinking that people from Wisconsin "speak properly" is quite another. I didn't think that anyone - even Wisconsinites - thought that Wisconsinites were anything but abusive to the spoken English language. People understand them well enough, though, so it's not a big deal. But to pretend that it is "proper" is downright delusional. It is the rough equivalent of pretending that a man with his genitalia tucked between his legs is as much - or even more of - a woman as anyone else because they can swim a 200m freestyle faster. Sheesh.
@@OFFICIALUND Thanks for showing the world that you have no sense of humor.
@@G5Hohn And thank you for showing the world that you have no attachment to reality. Do you actually own a foam cheesehead? You do, don't you? And you think that you are the arbiter of what is and what is not humor?
Very interesting and informative discussion, thank you both :)
Wonderful video. Thank you for all you do! Would it be possible to do an episode with David Tubb?
These are awesome. Keep it up. I know you ask the person you’re interviewing for who they would like to recommend for the next podcast. I recommend Robert Waggoner and Mark from SAC.
Brilliant!
Great interview!
Wow that was some great info.
Thank you for the knowledge
Awesome video- very informative.
Its interesting that Frank likes Hoppes #9 so much. I have a large bottle and used Hoppes exclusively...until I bought a borescope. My carbon barrels (not stainless) were loaded with copper and carbon fouling. I was shocked actually because I kept them clean between range visits. Now I use Wipe Out followed by Bore Tech Eliminator. Huge difference. I now have 3 Bartlein barrels and will do a comparison to see if Hoppes works better on stainless than factory carbon barrels.
Great discussion...well done...
When Frank is available to share his thoughts, I listen.
Frank, great conversation and I would love to know more about that 200yrd bullet test where they photographed the bullets in flight. Please let us know where we can find that info when it is released, I think it could be really useful information to take a look at.
Super video.hope u do continue this topic
I've recently bought some IOSSO after seeing Jack Neary and Bryan and others talk about using these pastes. I did a short test on the outside of a barrel with IOSSO and a Dremel polishing wheel. ABSOLUTELY it is abrasive will will polish the bore just like Flitz or something else would.
However, like Frank says here, it comes down to how much polishing you do. I think if you don't get carried away and use patch after patch after patch of the stuff, it's fine. I go by cleaning rod feel. I only use the IOSSO when the rod tells me the solvent isn't getting it all out.
This highlights my concerns with used rifles, not how they've been shot but how they've been cleaned. I'd rather buy one that's not been cleaned much than one that's been cleaned too much. I use VP90 in my cabinet.
Very informative 👌☘️🇮🇪
Sounds like fun to try
Listening to Frank talk about 4 (conventional) vs 5R and the highspeed photography having burrs on the bullets of the 4, I believe the burrs stem from the sharper bottom corners (and possible poor sealing/gas leakage around the jacket) of the conventional 4 groove vs the trapezoid shape of the 5R land. I am a long-time supporter of 4 (or 6) groove barrels for opposed reamer flute contact stability (off the shelf reamers are 6 flute)......but I wonder if you have 4R style rifling if you can still get better reamer stability and more adequate sealing/easier cleaning/etc.??? Granted you still have the concern of more "squeeze" on the bullet from opposed lands engraving the bullet (as Frank pointed out). Thanks again Frank for everything.
Great interview have part 2 soon
When is the Frank Green video 2 coming? So much good information.
Great interview please ask him about rimfire barrels in part 2
Ive always shot Shilen barrels but I've been hearing more & more about these , might try one next time
*Pronounced "Bart-Line"... It's THE barrel to shoot, and it's awesome to know Frank & Co. have **_out-Kriegered_** Krieger.*
Iv been debating getting a Bartlien bbl.
I need a 6mm 30" long 1.50 straight contour
Frank or Eric, please explain the exact way that you recommend cleaning out the carbon ring. Thank you!
I was helping a friend with 300 mag factory Winchester, I wish I had saved the video of borescope ,
From factory barrel had chunks out of the metal, only thing I could come up with was carbon from metal in the barrel itself was fracturing and coming out of the metal itself.
The rifle had a host of other problems and would shoot 3 to 4 inch 3 shot groups at 100 yards,
After I got all the other issues repaired and fed it some Lapua brass , RL-26 the rifle will now shoot ~.500. 3 shot groups, hell I was amazed that rough of a barrel would still shoot good enough for a hunting rifle.
Just lucky maybe??
Erik, check out the gunsmith of Colonial Williamsburg. It was made in like the 1960s I think and I noticed it was on You Tube recently. It shows them using the old rifling machine making a flintlock rifle the old way. Very interesting. I've been there in recent years and the gunsmith shop is still operating there.
Finding this episode extremely fascinating, even if there weren’t any hard conclusions drawn, with the exception of the potential for negative affects from expeditious and severe bore maintenance methods. I don’t know that I’ve been able to understand when the methods cross the line into severe. Maybe anything beyond normal patching / cleaning, and the use of anything chemical that can attack bore metallurgy if given too long a dwell period or residue not being entirely removed?
Regarding bore finishes, y’all got me thinking that there may be a similarity to the methodology of engine cylinder bore honing currently happening with CNC honing equipment / piston ring technology, to accomplish verifiable and consistent plateau finishes.
GREAT VIDEO -THE BARREL MAKER KNOWS !!!!!!!!!!!!!!!!!!!!!!!
Eric Evinrude or Johnson outboards "2 stroke tuner" aerosol try that . Great decarbonizer and it wont etch anything .
We'd love to see you and Joel Russo/Terminus Actions have a convo!
Surgical stainless will also rust. It's actually the cheaper 300 series stainless steels that are the most corrosion resistant. Those that are used on say tanks and containers and such. The best way to tell if a stainless steel will corrode is see if a magnet will stick to it. If a magnet will stick it's a high carbon stainless that can be heat treated and hardened.
Great video
I will say this, the Cooling aspect of a Fluted barrel is 100% factually true *BUT* its soo small its a negligible difference at best because of thermodynamic laws / the way heat transfers. So when someone says that fluted barrels cool faster, technically, yes they are correct *but* again, the difference is SOOOOO small that there is virtually zero appreciable difference (difference is soo small that only the most sensitive of test equipment can display the difference).
Basically, the surface area increase from adding flutes is insignificant when you factor in the small Delta T value between the barrel and the outside ambient air. The smaller the Delta T value is (which it the difference between the barrel temp and the ambient air temp in this example), the slower the heat transfer rate between the two (laws of Thermodynamics which we can not get around) and to increase the rate by a significant degree, you need a very significant surface area change. Barrels overall just do not have enough surface area to begin with for fluting to have that much of a difference to offset the small Delta T value.
A way to understand the how Delta T value makes a difference that anyone can fairly easily see is the time it take an ice cube to melt in a 90°F room vs. the time it takes for it to melt in a 40°F room. Heat energy transfers from hot to cold in order to reach equilibrium and the large the temperature difference is between the two media's, the faster the heat energy transfers where as the closer they are in temperature, the slower the rate of transfer is. This is why the Ice cube melts faster in the 90° room than it does in the 40° room. The Delta T between the room air and ice cube is larger in the 90° room than it is in the 40° room.
Say the Ice cube came from a freezer that was set to 20°F, in the 90° room, the Delta T value is 70° but the value for the ice cube in the 40° room is only 20°
Well the same thing applies to a Hot barrel and the ambient air. If the Air is say 90° and the barrel is say 120°, the Delta T is 30° and the barrel doesn't cool very fast but if the barrel was 120 and the ambient air was 30°, the Delta T is 90° and the barrel cools much faster.
Now back to the surface area, if you had say 30" of barrel length (Ø1.25" Straight contour barrel used for this example) that could be fluted and you cut 6 28" long flutes in it say on a milling machine using a Ø3/8 ball nose end mill to a depth of .125", your surface area increase is right at about 10% which might seem pretty significant but really its not, that barrel unfluted has about 118 sq/in of surface are where as the fluted version has 130 so that is only about a 12 sq/in area increase. To really get any minimal appreciable gains, you need at least a 25% increase in surface area when dealing with low Delta T values. Now on say maybe a belt feed machine gun were you are likely to get the barrel really hot (i.e., having a much higher Delta T value at the end of a string of fire), then yes, that 10% increase can be somewhat appreciable.
The other thing though is a fluted barrel will heat up faster and to a higher temp for the same round count / time interval because of the lower mass. Example, two identical barrels but one is fluted, after say 20 rounds fired in fairly quick succession at the same identical time interval, the fluted barrel will get to a higher temperature because it has less mass to absorb heat generated by the firing string and thus the final temperature will be higher (remember "Heat" and "Temperature" are two totally different things).
57:20 Yep Erik, its that old saying of "enough knowledge to think that you're right but not enough knowledge to know that you're wrong".
416 Stainless has more Iron, less Chromium and no Nickel where as 300 series Stainless (like 316 commonly used in surgical and Marine industries) for one, has Nickel, has more Chromium and less Iron.
I clean my brushes and jags by tossing them in my ultrasonic cleaner for a few minutes. If you have one try it out, works great.
Erik Cortina, Do you remember about 2 years ago when I asked you what did you think about a Left Hand Gain Twist barrels. Ive been shooting them for many years.They are really beneficial in large calibers from 338 LM and up in my experience.The bullet does not hit the lands as hard and the gas es on the final faster twist seems to be better. I use to think theLeft hand shot better on this side of the equator and Right Hand shot better on the southern side.I dont think it now.
What are y’all’s thoughts about MRR rifling like Sabatti use
This is one of the best interviews. Frank is a wealth of knowledge. Hope to see a follow up video. Thanks again Erik for doing this.
I’ve thrown my bronze brushes away after this video. Also I’ve learned I’m guilty of not cleaning enough, but the only cleaning I’ll be doing again is a couple wet patches of hoppes 9 followed by some dry ones. That’s it.
Ok. Didn't read all the comments. But cut rifiling is standard as is slight choking with Shultz and Larsen barrels.
Hey,Erik why you don't say the force ING cone instead of the word ( chamber) to get the idea better understanding.
I really need a Bartline carbon barrel prefit for a terminus action.
Hard to find