Cryogenic Processing for Gun Barrels

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11 years 7 months ago #20741 by Akai
Cryogenic Processing for Gun Barrels was created by Akai
Anyone ever had this done to any of their weapons? What were your results?
cryopro.com/

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11 years 7 months ago #20750 by Siscowet
Replied by Siscowet on topic Cryogenic Processing for Gun Barrels
No, but reading about it for the FN SCAR, and also for RRA AR's I think it would be a good thing. If I ever get either of my accuracy platform AR's rebarreled, I will definitely go that route. MRaley, Has Armalite ever investigated it?

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11 years 7 months ago #20755 by faawrenchbndr
Replied by faawrenchbndr on topic Cryogenic Processing for Gun Barrels
A few years vp back I was into Mini 14s very badly.
Had a Mini barrel cryo'ed, greatly improved the vertical stringing that plagues the Mini.

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11 years 7 months ago #20760 by LebbenB
Replied by LebbenB on topic Cryogenic Processing for Gun Barrels
Then again I've heard some barrel makers like Shilen dismiss it.

From the Shilen website FAQs section:

If you have heard that the cryogenic treatment stress relieves steel, this is false. We have measured the residual stress in 4140 and 416 steel with a process called x-ray diffraction. After much R&D, we have not been able to measure any changes in molecular stress after cryo treatment. For this reason we do not endorse the cryogenic process, but we can safely say that it is not detrimental to the barrel either.

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11 years 7 months ago #20761 by faawrenchbndr
Replied by faawrenchbndr on topic Cryogenic Processing for Gun Barrels
Not to dispute Shilen, but it did a lot for the stringing with the Mini when the barrel heated up.

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11 years 7 months ago - 11 years 7 months ago #20765 by LebbenB
Replied by LebbenB on topic Cryogenic Processing for Gun Barrels
I have no doubt that it helped, just throwing up a different school of thought. Those Mini barrels are so thin that it doesn't take too much to heat them up, I agree. Anything you can do to lessen the muzzle whip would be an improvement. How much did that run you, if I may ask?
Last edit: 11 years 7 months ago by LebbenB.

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11 years 7 months ago #20771 by 13fcolt
Replied by 13fcolt on topic Cryogenic Processing for Gun Barrels
Shilen & lija don't do it. Kreiger does it twice, or used too. There are also knife makers that have either sworn by it or sworn it off as "no difference we can measure".

Comparing the initial stress of a mini14 barrel and a point cut custom match barrel can be the reason for the difference in improvement, given that the quality difference was that the match barrel already has less stress than the process can relieve.
just a thought.

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11 years 7 months ago #20830 by Charlie
Replied by Charlie on topic Cryogenic Processing for Gun Barrels
I looked into it. The stats are hazey, and the process is interesting (to say the least!). IMHO, it's a con job.

Charlie

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11 years 7 months ago #20840 by faawrenchbndr
Replied by faawrenchbndr on topic Cryogenic Processing for Gun Barrels

LebbenB wrote: I have no doubt that it helped, just throwing up a different school of thought. Those Mini barrels are so thin that it doesn't take too much to heat them up, I agree. Anything you can do to lessen the muzzle whip would be an improvement. How much did that run you, if I may ask?


Mine was a Ranch model, so the barrel was a bit thicker. I had a frien that worked at CryroPro about eight years ago. Cost me postage and $20
I have go heard they charge about $150 these days. Have not messed with a Mini in about six years.

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11 years 6 months ago - 11 years 6 months ago #23120 by OleCowboy
Replied by OleCowboy on topic Cryogenic Processing for Gun Barrels
You would do well to read this article:

The Science of Cryogenic Processing

The following information is taken from ASM Handbook Volume 4 Heat Treating, ©1991 and last revised in 2001:

"Cold Treating and Cryogenic Treatment of Steel" from ASM Handbook Volume 4 Heat Treating, p203-206.


One of the problems on the gun industry and this hold true for other forms of things people do either professionally or for recreation there are a lot of "experts" and many of them make a living selling their expertise. They often do not know or fully understand what they are doing.

I have been off roading since the 60's, owned an offroad shop and built Jeeps that do that. By luck I guess I am an engineer by trade and I call upon my background to sort out fact from fuzz, truth from fable.

We have no shortage of that in the gun world and in spades in the AR world. You might ask the question: What does it take to go into the AR selling business? At its most basic you have to place an order from someone who sells lowers and will put your logo on the side of it. Now gather the parts, assemble them and run some ads, you are in business. There is not one single requirement for you to actually manufacture a single part.

After spending more than a day on the NRA convention floor, I did not know there were that many companies selling AR's, names I have never heard of of, yet there they were selling the worlds best and most accurate AR so says them...

Cold treating AND cryogenic treatment of metals is a science, been around a LONG time...

I am no expert on guns, don't try to be and look to folks that indeed are, we have a few of them on here in fact. I am but an end user of guns, but have owned one since I got my first at age 5. What I can tell is when someone knows what they are talking about, on here I pay attention to several folks whose knowledge is trustable and most of all verifiable...'Trust by verify' Ronald Reagan.
Last edit: 11 years 6 months ago by OleCowboy.

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