My first real benchrest gun in 6PPC had a Krieger barrel. It was the first time I could consistently shoot sub quarter minute groups. I cut that barrel back and re-chambered it twice because I didn't want to let it go. Great interview.
Now that I think about it that was the barrel that I won my first local BR for score championship with. 300 21x with moly coated berger 68gn FBT bullets and H322 powder. I went and checked and I still have the barrel...it ended life at just over 20" after the two re-chamberings. Would love to see a longer form interview with Mr. Krieger. As a side note I actually did some experimenting with long jumps of 60+ thou recently and was very surprised by the results. It was necessitated when I accidentally used my fast twist(longer throated) reamer on a slow twist barrel which meant the lighter bullets had to jump that far to get enough bearing surface in the case.
@@wrstew1272 The two most accurate guns I've ever seen both used loads that jumped the bullet. Coincidentally they were both slow twist 6BR barrels. Not 6PPC like you'd probably expect.
Dude...how you didn't lose your shit and delivered that measured, professional response when he started talking about the guy who called him about tuner he made was legend. I was dead laughing
That's not what he said. He said he doesn't bother doing it on stainless barrels and he also said chrome moly barrels have more of an affinity for copper. Not breaking them in probably applies to his barrels, which are lapped after reaming. Not all barrels have as good a surface finish as his.
That's why I like hammer forged barrels, with a cryo treatment . Ya Dont have all those crosshatch machine marks to deal with, that collect copper line crazy. Hammer forged barrels, when done correct . You will get a Perfect mirror finish inside. And it will cleaned up like a champ.
What this really means is no break in necessary on high quality, lapped barrels. If you have a cheap or factory barrel, you would likely still benefit from some sort of break in. It is more work, but I have moved to hand lapping any lower quality or factory barrels myself before ever firing a round through them. Is this necessary? Maybe not, but it makes me feel better and gives me good performance from shot one.
Excellent interview! I’ve been a Mechanical Engineer for 25 years and this interview brought back many of the topics I studied and also had questions about regarding barrels. Just amazing, thank you.
I want to say that this was the best interview. But there has been so many excellent and information packed episodes, so i will just say that it shut me up for an hour. And im still trying to process half of it. A big thank you Erik for all the work you put in doing this. And of course also to Mr Krieger. 👍♥️
Great interview. Nice to hear his insights coming from a high a high power/barrel maker perspective. I've had a fair number of Kriegers over the years and shot many personal bests with them.
What a super great interview!!!!! It should have been at least another couple of hours!!! I was most interested in the conversation regarding lapping the barrels. Back in the 60’s and 70’s I was employed as a carbide a die maker. We used assorted grades of diamond compounds to first lap and then polish the die after it was first reamed. The rule of thumb was to always use the lap or polishing stick of softer material than the carbide die. Of course that was easy as only a diamond was harder than the carbide. We also made hardened steel spacers behind the actual die. If for some reason the toolmaker thought he could make the lap out of a piece of hardened drill rod, so as to only make one lap instead of 4 out of a softer steel. The result many times the steel insert would end up with a really bad finish as the diamond compound would not embed it self into the lap and would just roll around between the two hard surfaces. So my question is what type of material would the laps be made out of to prevent the lapping compound from embedding into the bore of the barrel???? I’m pretty sure the don’t use diamond compounds in their process. Just wondering! Thanks for a wonderful video!
Perfect timing for this guest. I had already decided on ordering a Krieger barrel in the next few weeks. It will be my first Krieger and first cut rifled. This interview certainly gave me confidence and excitement. Thank you both for your time.
Always enjoy these technical conversations Eric, even though I don’t competition shoot. Your guests are a wealth of information, and very interesting to listen to. Thanks Eric ✌️😎👍
Man all I can say is my M110 AR10 barrel is superb. Shannon over at Johnnys reloading bench turned me on to all of this. But the Krieger barreled AR10 he built and reloaded for was my personal turning point. After seeing what his build was capable of I was all aboard. It was just fate that I wanted a AR10 when Shannon started that series. What Shannon does in his videos with his rifle mine does the exact same thing. That’s a testament to the quality of the barrels they make at Krieger.
Goldmine of information from a highly respected titan of the barrel and competitive shooting world. He has probably set aside more fallacies than any other person I have seen you interview. Totally out of the park Eric 👍👍
Awesome!! One of the top three interviews in my opinion. Mr. Krieger is a wealth of information and effectively conveys its with a very pleasant attitude. Bravo.
Locktite is used all throughout the auto industry. The spark-plug tubes in my 2003 Dodge Neon RT were glued in at the factory with stud and bearing mount…aka red locktite.
Thank you for the another great interview from a great firearms industry individual. Please consider doing interviews with Dave Gullo of Buffalo Arms Company in Ponderay, Idaho, much like yourself Dave is a multi championship shooter for many years as well as a manufacturer and supplier to the firearms industry. Also, Adam Weatherby, a third generation rifle manufacturer, the grandson of Roy Weatherby.
Would like to know more about cryo treating. When they do it and when they don’t. Also would like to get his opinion on using colloidal graphite in the bore to fill in and seal imperfections in the bore. Gre Tan swears by it.
Fantastic interview, man, I'd love to just hang out at some of these barrel shops. Holy crap I shot with Boots a couple years ago, super nice guy. If he shows up on the 2nd day of a match, prepare for wild ass weather, apparently he has some kind of voodoo that follows him around. Mr. Krieger is ridiculously knowledgeable in the entire area of rifles. I've seen a couple of his interviews, and he shoots it straight. After seeing a brand M-16A2 batch absorbed by an armorer and Army master gunsmith, and assisting in bringing them into a unit, zero break in, we took them out, fired 100 rounds in each M-16A2, and that was the break-in. We cleaned each really well, and the master gunsmith (usually an 18B) borescopes them, and they make the determination if it needed to go back to Colt or whoever made the rifle. All the ones we ingested were Colt, because it was the first batch post field test to hit the unit. Really neat to see the entire process. One of my favorite details to ever get assigned on. I saw numerous M-16A2s shoot sub 2MOA at 300yds. I don't know if it was just how well the rifle barrel was, or how well tuned they were. Having a well build M-16A2 has way more going on than a bolt gun. A lot more going on in those gas guns. I would've never expected that bow/bend not to introduce any issues. I am also a world-class race car driver, just something I do as a hobby, in my mind driving down I-75 through Atlanta, I like to imagine I am in the Monaco Grand Prix. Luckily, I haven't been put into the wall or hit a caution. I liked that phases of the moon on rimfire, aint no lie, you best find out the astrological sign of your rimfire barrel and have a reading done with it.
I binge-listened to the interviews with Brux, Bartlein and Kreiger and it's amazing to hear the different opinions on barrel cleaning considering all 3 makers use similar materials and processes
I worked as a machinist for about 17 years. I could relate when he said most of machining is the rigidity of the setup. I worked at a place that would machine stainless steel bores with a small diameter boring bar. It was difficult getting a good finish within .001 to .002" of taper.
I know it would be very hard to do but I’d love to hear Krieger,Brux and Frank Green(Bartlein) talk about barrels and anything else they find interesting. Maybe add a top notch gunsmith or 2 and just turn them loose while the information flows. Thank you for letting us share this stuff.
John's comment on the artillery rear driving bullet describes the Remington Core Lokt. Not sure how many people are aware, but below the cannelure they're typical of size, but above the cannelure, they're relieved. This parallels the first 264WM ammo when the M70 first chambered it. And often Core Lokts are regarded as pretty accurate for a low cost bullet.
Great interview, it's amazing competitors in the same business are friendly, now in this cut-throat world !!! But as what was mentioned, it's a slow process.........................................
The end result is nice, but it really changes the whole purpose of the rifle. Its intent is lightweight and handy for normal hunting ranges 300 to max 400 with 90% within 200. A big part of that is a 2nd focal plane scope with a thick and fast reticle.
unbelievable knowledge. Able to keep up with what he was saying as he was talking many grades above my pay by the absolute ability to explain so well!!!
I thought about that also, but considering the relatively small market for really precision barrels and the volume of metal in todays foundry’s production schemes….. the price would probably be far more than the end users would pay. Japanese and German first came to mind in the knife market, but once again far smaller amounts and different end usage equals vast foundry requirements. Hopefully my rambling makes sense? It’s really late 😅
My favorite one so far. This guy is a walking encyclopedia. I would think the next generation barrel maker would be making their own steel and probably some fancy way of spinning it while it's molten so you get good grain structure and heavy particles to the exterior. Another way might be platinum or some other metal sleeve could be inserted in at extreme temperatures then machined. Maybe there could be 3 layers one for strength, one for vibration absorbing (like cast iron) and one for machining. I love how technology is always pushing the limits. I was thinking maybe you could test how good a barrel is in tune by measure the hertz it produces like a "chime" When the powder goes off it's a huge explosion and if your barrel gets bad vibrations from that explosion I don't see how that could be good. So maybe using your turners and some kind of chime test would be interesting to me.
You want to make the barrels last longer and shoot better? You need a new propellant that operates at lower temperatures and provide a longer pressure duration at lower pressure. It is flame erosion that kills barrels not the bullet friction. Nice to hear from a maker that does not exaggerate or express so called facts outside his level of expertise.
Nickel is an austenite, so it stabilizes grain structure in alloys. Low nickel stainless like 304 and 309 will essentially rust, not really, but close enough, higher nickel content like in 316L it has better corrosion resistance but becomes softer. The 416r used in high quality gun barrels is about as close to perfect as can be achieved, but it's called crucible steel because of the chrome content that makes it hard. I'm sure it can be tweaked a little, up or down on the nickel content and maybe even mixed with magnesium, I don't know for sure. You can also use titanium alloys, but it can't be pure, it has to be an alloy, with that said, there might be a use for titanium coatings inside the bore. I'm sure someone has tried many of these things and most likely concluded that it's cost prohibitive.🤷🏼♂️
Which steel makes a better barrel? The heat number that you can cut 10 barrels without sharpening or the heat number that requires tool sharpening after every barrel or even every pass? I'm wondering if the harder/denser metal, makes a better barrel? Thank you again for such great content ‼️🤙
I would hate to see the price tag on a barrel made with CPM or any of the other powder metallurgy steels. Just a small thin chunk for knife making costs an arm, leg and a kidney.
What if you have a receiver not threaded and barrel not threaded, attached both somehow then test fire, 5 rd then rotate 25 degrees , repeat then see what the group results?
Thanks Erik, I am extremely curious of Mr Kriegers opinion on PM steel for barrels, it is suppose to be much more homogenous Is it possible to get a reply from him.
6 months late but the air gauge we use where I work has an air supply a big gage that is calibrated to the head we put on the end of a long hose and as the head is pushed through a bore the needle on the gage moves depending on the resistance the air flow through the head in the bore receives. Simplified but how I understand it. The gage reads in half a tenth of a tenth. Our gage is for bigger bores around an inch. I don't know if what barrel makers use is the same but I would assume it is similar.
Could it have to to do with resistance. As the bullet heats up, the lead expands. Buy making it looser on the end, it makes room for the expanded load. Less resistance out of the barrel. 🤷♂️😅
I do believe there is better steel. However your reamers and everything that cuts would probably have to change as well. Unless Rockwell hardness stays the same, and you’d have to learn the steel and how it reacts.
Interesting conversation about barrel steels. You guys need to contact one of the innovative knife companies like Spyderco. They are the masters of steel metallurgy. More homogeneous, powdered steels (CPM) already exist. Granted, the appropriate steels for barrels and knives are vastly different. I was amazed that the average barrel only has a rock hardness of around 30...knives are in the 50-60+ harness range. Again, very different application.
Bartlein recommends some mild break in and says never use any abrasives, Mr Krieger states no break in and, "Oh yes, abrasivs are fine, I like them they are so mild. Both of their barrels are so similar. Always 2 sides to the coin.
Better Steel? Perhaps Austrian Boler Super clean using their method of ultra fine powder metallurgy? KnifeMaker/Retired after over 47+ Years in the Craft
I now see how Mr. Krieger raised the bar for accuracy. He has forgotten more than we will ever know and he still has that drive to get better! Wow
My first real benchrest gun in 6PPC had a Krieger barrel. It was the first time I could consistently shoot sub quarter minute groups. I cut that barrel back and re-chambered it twice because I didn't want to let it go. Great interview.
Now that I think about it that was the barrel that I won my first local BR for score championship with. 300 21x with moly coated berger 68gn FBT bullets and H322 powder. I went and checked and I still have the barrel...it ended life at just over 20" after the two re-chamberings. Would love to see a longer form interview with Mr. Krieger. As a side note I actually did some experimenting with long jumps of 60+ thou recently and was very surprised by the results. It was necessitated when I accidentally used my fast twist(longer throated) reamer on a slow twist barrel which meant the lighter bullets had to jump that far to get enough bearing surface in the case.
@@MMBRM-So much for the “in the lands” “requirement “?
@@wrstew1272 The two most accurate guns I've ever seen both used loads that jumped the bullet. Coincidentally they were both slow twist 6BR barrels. Not 6PPC like you'd probably expect.
Dude...how you didn't lose your shit and delivered that measured, professional response when he started talking about the guy who called him about tuner he made was legend. I was dead laughing
Mr Krieger is a wealth of knowledge! Well done Erik!
You heard it here folks, John Krieger says no "break-in" needed
I use to bout 20 yrs ago but these days nope, don't even know what break in means, new barrel start shootin
That's not what he said. He said he doesn't bother doing it on stainless barrels and he also said chrome moly barrels have more of an affinity for copper. Not breaking them in probably applies to his barrels, which are lapped after reaming. Not all barrels have as good a surface finish as his.
He also says he’s not a slave to removing copper, unless there’s an issue
That's why I like hammer forged barrels, with a cryo treatment . Ya Dont have all those crosshatch machine marks to deal with, that collect copper line crazy. Hammer forged barrels, when done correct . You will get a Perfect mirror finish inside. And it will cleaned up like a champ.
What this really means is no break in necessary on high quality, lapped barrels. If you have a cheap or factory barrel, you would likely still benefit from some sort of break in. It is more work, but I have moved to hand lapping any lower quality or factory barrels myself before ever firing a round through them. Is this necessary? Maybe not, but it makes me feel better and gives me good performance from shot one.
Eric you need to have him on again i feel you you only barley scratched the surface on what that man knows love it keep up the good work MR.
Erik didn't even have to ask hardly any questions. Just a straight knowledge injection.
Excellent interview! I’ve been a Mechanical Engineer for 25 years and this interview brought back many of the topics I studied and also had questions about regarding barrels. Just amazing, thank you.
Erik what a superb podcast! Mr kreiger is a wealth of knowledge, it would be great to have him on again, steve uk
Thank you
Thank you Erik for all your videos, it really help new members. Thank you.
John is super nice guy. Makes me want to buy barrel from him and I don’t need one. We need more people like him in this world instead of wise guys!
I want to say that this was the best interview. But there has been so many excellent and information packed episodes, so i will just say that it shut me up for an hour. And im still trying to process half of it.
A big thank you Erik for all the work you put in doing this.
And of course also to Mr Krieger.
👍♥️
What a wealth of knowledge on barrel making John has acquired. Very informative interview great guest to have on Erik
John Krieger is a few levels above anyone else, Krieger is still the ultimate standard.
Batlien?
Great interview. Nice to hear his insights coming from a high a high power/barrel maker perspective. I've had a fair number of Kriegers over the years and shot many personal bests with them.
What a super great interview!!!!! It should have been at least another couple of hours!!! I was most interested in the conversation regarding lapping the barrels. Back in the 60’s and 70’s I was employed as a carbide a die maker. We used assorted grades of diamond compounds to first lap and then polish the die after it was first reamed. The rule of thumb was to always use the lap or polishing stick of softer material than the carbide die. Of course that was easy as only a diamond was harder than the carbide. We also made hardened steel spacers behind the actual die. If for some reason the toolmaker thought he could make the lap out of a piece of hardened drill rod, so as to only make one lap instead of 4 out of a softer steel. The result many times the steel insert would end up with a really bad finish as the diamond compound would not embed it self into the lap and would just roll around between the two hard surfaces. So my question is what type of material would the laps be made out of to prevent the lapping compound from embedding into the bore of the barrel???? I’m pretty sure the don’t use diamond compounds in their process. Just wondering!
Thanks for a wonderful video!
I believe it’s mostly lead. Just a consistent size carrier. From multiple people doing similar lapping I have read.
We cast a led lap and mix our own lapping compound in house.
Perfect timing for this guest. I had already decided on ordering a Krieger barrel in the next few weeks. It will be my first Krieger and first cut rifled. This interview certainly gave me confidence and excitement. Thank you both for your time.
Always enjoy these technical conversations Eric, even though I don’t competition shoot. Your guests are a wealth of information, and very interesting to listen to. Thanks Eric ✌️😎👍
Holy information overload Batman! I’m going to have to listen to this multiple times. 👍🏻
Another fascinating interview.
Wow that was awesome what a fun guy to listen to
Outstanding, Outstanding, Outstanding! ! ! ! ! ! ! !
Glad you enjoyed it!
Man all I can say is my M110 AR10 barrel is superb. Shannon over at Johnnys reloading bench turned me on to all of this. But the Krieger barreled AR10 he built and reloaded for was my personal turning point. After seeing what his build was capable of I was all aboard. It was just fate that I wanted a AR10 when Shannon started that series. What Shannon does in his videos with his rifle mine does the exact same thing. That’s a testament to the quality of the barrels they make at Krieger.
Best barrels on earth, nothing comes close
Thank you for making the advertising interesting lol. Amazing content, thank you for sharing.
Goldmine of information from a highly respected titan of the barrel and competitive shooting world. He has probably set aside more fallacies than any other person I have seen you interview. Totally out of the park Eric 👍👍
Awesome!! One of the top three interviews in my opinion. Mr. Krieger is a wealth of information and effectively conveys its with a very pleasant attitude. Bravo.
Man, what a nice guy.
Mr Krieger too.
😊
Locktite is used all throughout the auto industry. The spark-plug tubes in my 2003 Dodge Neon RT were glued in at the factory with stud and bearing mount…aka red locktite.
This is fantastic! I love my Kreiger barrel!!!
Great interview! He may not be current on every discipline but they still make a great barrel that still are setting records
@ 46:40 he mentioned Karl Kenyon which really surprised me. Makes me curious of how many folks around these days know who Kenyon was.
Great interview! My first Krieger barrel arrived yesterday. 😍
Wow, what a wealth of information! 😊
Thank you for the another great interview from a great firearms industry individual. Please consider doing interviews with Dave Gullo of Buffalo Arms Company in Ponderay, Idaho, much like yourself Dave is a multi championship shooter for many years as well as a manufacturer and supplier to the firearms industry. Also, Adam Weatherby, a third generation rifle manufacturer, the grandson of Roy Weatherby.
Would like to know more about cryo treating. When they do it and when they don’t.
Also would like to get his opinion on using colloidal graphite in the bore to fill in and seal imperfections in the bore. Gre Tan swears by it.
Erik, all you had to do for this interview was ask Jack a question and let him go. He'll talk your ears off! Good stuff.
Thank you for sharing with us such informative conversations.
Fantastic interview, man, I'd love to just hang out at some of these barrel shops. Holy crap I shot with Boots a couple years ago, super nice guy. If he shows up on the 2nd day of a match, prepare for wild ass weather, apparently he has some kind of voodoo that follows him around. Mr. Krieger is ridiculously knowledgeable in the entire area of rifles. I've seen a couple of his interviews, and he shoots it straight. After seeing a brand M-16A2 batch absorbed by an armorer and Army master gunsmith, and assisting in bringing them into a unit, zero break in, we took them out, fired 100 rounds in each M-16A2, and that was the break-in. We cleaned each really well, and the master gunsmith (usually an 18B) borescopes them, and they make the determination if it needed to go back to Colt or whoever made the rifle. All the ones we ingested were Colt, because it was the first batch post field test to hit the unit. Really neat to see the entire process. One of my favorite details to ever get assigned on. I saw numerous M-16A2s shoot sub 2MOA at 300yds. I don't know if it was just how well the rifle barrel was, or how well tuned they were. Having a well build M-16A2 has way more going on than a bolt gun. A lot more going on in those gas guns. I would've never expected that bow/bend not to introduce any issues. I am also a world-class race car driver, just something I do as a hobby, in my mind driving down I-75 through Atlanta, I like to imagine I am in the Monaco Grand Prix. Luckily, I haven't been put into the wall or hit a caution. I liked that phases of the moon on rimfire, aint no lie, you best find out the astrological sign of your rimfire barrel and have a reading done with it.
I binge-listened to the interviews with Brux, Bartlein and Kreiger and it's amazing to hear the different opinions on barrel cleaning considering all 3 makers use similar materials and processes
I worked as a machinist for about 17 years. I could relate when he said most of machining is the rigidity of the setup. I worked at a place that would machine stainless steel bores with a small diameter boring bar. It was difficult getting a good finish within .001 to .002" of taper.
A ton of good information on that episode. Appreciate it as always
I have heard this is the guy who knows what matters and what doesn’t and that barrels have their own personalities no matter what.
Best one yet !!!!!!!
I know it would be very hard to do but I’d love to hear Krieger,Brux and Frank Green(Bartlein) talk about barrels and anything else they find interesting. Maybe add a top notch gunsmith or 2 and just turn them loose while the information flows. Thank you for letting us share this stuff.
Finest quality barrels, and excellent customer service.
Another great one, Erik.
John's comment on the artillery rear driving bullet describes the Remington Core Lokt. Not sure how many people are aware, but below the cannelure they're typical of size, but above the cannelure, they're relieved. This parallels the first 264WM ammo when the M70 first chambered it. And often Core Lokts are regarded as pretty accurate for a low cost bullet.
Great interview, it's amazing competitors in the same business are friendly, now in this cut-throat world !!!
But as what was mentioned, it's a slow process.........................................
Wow, what a great interview.
The end result is nice, but it really changes the whole purpose of the rifle. Its intent is lightweight and handy for normal hunting ranges 300 to max 400 with 90% within 200. A big part of that is a 2nd focal plane scope with a thick and fast reticle.
unbelievable knowledge. Able to keep up with what he was saying as he was talking many grades above my pay by the absolute ability to explain so well!!!
The mention of more consistent steel is interesting: could barrels be made by a powder metallurgy process, like high end knife steel is?
I thought about that also, but considering the relatively small market for really precision barrels and the volume of metal in todays foundry’s production schemes….. the price would probably be far more than the end users would pay. Japanese and German first came to mind in the knife market, but once again far smaller amounts and different end usage equals vast foundry requirements. Hopefully my rambling makes sense? It’s really late 😅
Vacuum arc remelted steel?
My favorite one so far. This guy is a walking encyclopedia. I would think the next generation barrel maker would be making their own steel and probably some fancy way of spinning it while it's molten so you get good grain structure and heavy particles to the exterior. Another way might be platinum or some other metal sleeve could be inserted in at extreme temperatures then machined. Maybe there could be 3 layers one for strength, one for vibration absorbing (like cast iron) and one for machining. I love how technology is always pushing the limits. I was thinking maybe you could test how good a barrel is in tune by measure the hertz it produces like a "chime" When the powder goes off it's a huge explosion and if your barrel gets bad vibrations from that explosion I don't see how that could be good. So maybe using your turners and some kind of chime test would be interesting to me.
You want to make the barrels last longer and shoot better? You need a new propellant that operates at lower temperatures and provide a longer pressure duration at lower pressure. It is flame erosion that kills barrels not the bullet friction. Nice to hear from a maker that does not exaggerate or express so called facts outside his level of expertise.
Great video still waiting to get my hands on a Krieger rimfire barrel.
Exceptional interview.
What a wealth of information! thank you Eric!
Nickel is an austenite, so it stabilizes grain structure in alloys. Low nickel stainless like 304 and 309 will essentially rust, not really, but close enough, higher nickel content like in 316L it has better corrosion resistance but becomes softer. The 416r used in high quality gun barrels is about as close to perfect as can be achieved, but it's called crucible steel because of the chrome content that makes it hard. I'm sure it can be tweaked a little, up or down on the nickel content and maybe even mixed with magnesium, I don't know for sure. You can also use titanium alloys, but it can't be pure, it has to be an alloy, with that said, there might be a use for titanium coatings inside the bore. I'm sure someone has tried many of these things and most likely concluded that it's cost prohibitive.🤷🏼♂️
What a wealth of information from Mr. Krieger. Just wished the really good barrel makers weren't so far behind.
Very good discussion. I am curious why 410 SS isn't used much. Is it harder to machine?
Which steel makes a better barrel? The heat number that you can cut 10 barrels without sharpening or the heat number that requires tool sharpening after every barrel or even every pass? I'm wondering if the harder/denser metal, makes a better barrel? Thank you again for such great content ‼️🤙
Is there a 26 or28 inch barrel, for a 300 Remington ultra mag, shooting 190 grain. Thanks,in advance!
Best session ever.
Did this video come out in March…the code for CMS expired on 3/31/23. Just saying
Always wondered why there's not hexagonal rifle barrels. They make them for pistols
Really interesting about the sleeve being installed into the throat that will take the heat.
I would hate to see the price tag on a barrel made with CPM or any of the other powder metallurgy steels. Just a small thin chunk for knife making costs an arm, leg and a kidney.
What if you have a receiver not threaded and barrel not threaded, attached both somehow then test fire, 5 rd then rotate 25 degrees , repeat then see what the group results?
It’s been done and you want it shooting it’s highest point up
Thanks Erik, I am extremely curious of Mr Kriegers opinion on PM steel for barrels, it is suppose to be much more homogenous Is it possible to get a reply from him.
Any rimfire experiments with multiple, shallow grooves; similar to airifles?
Marlin micro groove since the 50 's
Thank you for the knowledge
Incredible knowledge!!! 🐕
I’m a tool and die maker this guy really knows his stuff
He wanted to keep talking….Seems EC was ready to stop just listening. Lots of perceived restraint on EC’s part though. Good episode.
Finally almost caught up. Only took a couple hundred hours in the seeder.
Thank you that was wonderful :)
john krieger what a vast intalect
What is air gauge and how it works
6 months late but the air gauge we use where I work has an air supply a big gage that is calibrated to the head we put on the end of a long hose and as the head is pushed through a bore the needle on the gage moves depending on the resistance the air flow through the head in the bore receives. Simplified but how I understand it. The gage reads in half a tenth of a tenth. Our gage is for bigger bores around an inch. I don't know if what barrel makers use is the same but I would assume it is similar.
Could it have to to do with resistance. As the bullet heats up, the lead expands. Buy making it looser on the end, it makes room for the expanded load. Less resistance out of the barrel. 🤷♂️😅
Mr. Kreiger could I tour your shop, I live in st.paul mn
Call our shop and set up a tour. :)
Precihole CRVN Series - Cut Rifling Machines
What a nice surprise
Thoughts on progressive twist?
I do believe there is better steel. However your reamers and everything that cuts would probably have to change as well. Unless Rockwell hardness stays the same, and you’d have to learn the steel and how it reacts.
Subtítulos. Please
I have a krieger barrel on my 223, it's very accurate.
Interesting conversation about barrel steels. You guys need to contact one of the innovative knife companies like Spyderco. They are the masters of steel metallurgy. More homogeneous, powdered steels (CPM) already exist. Granted, the appropriate steels for barrels and knives are vastly different. I was amazed that the average barrel only has a rock hardness of around 30...knives are in the 50-60+ harness range. Again, very different application.
60,000 + psi very different from hand use. And the barrel is rather inexpensive compared to the bullets needed to wear a good one out….😢
Well, wasn't that amazing😮🎉❤
Thank you
Krieger has so much experience......
Ha ha ‼️ Barrel tuners are pretty common from the King of tuners 😂that's classic.
Bartlein recommends some mild break in and says never use any abrasives, Mr Krieger states no break in and, "Oh yes, abrasivs are fine, I like them they are so mild. Both of their barrels are so similar. Always 2 sides to the coin.
Very intelligent man
Listen carefully - now you know why one barrel shoots better than another.
OMG John Krieger.
But gain twist have other benefits besides precision.
Better Steel? Perhaps Austrian Boler Super clean using their method of ultra fine powder metallurgy?
KnifeMaker/Retired after over 47+ Years in the Craft
I've read and heard many times German steel is best, steel from Spain next, then everything else.
I didn’t know there was such a thing called a barrel tuner. I wonder how that works or where someone could get one? 😂
Has anyone ever made a barrel from ar500 steel?