Cryogenic Processing for Gun Barrels

More
11 years 6 months ago - 11 years 6 months ago #23131 by mrraley
Replied by mrraley on topic Cryogenic Processing for Gun Barrels
ArmaLite Technical Note 103

We’ve been asked by a number of our customers why we don’t cryogenically treat our
barrels. So, we’ve written this Tech Note to address our beliefs regarding cryogenic
treating.

Cryogenic treating of barrels (cooling the barrel to a VERY low temperature [from -100
to -320 degrees F]) is offered by several companies. Many claims of increased life,
accuracy, etc have been made for such treatment.

We have found no scientifically rigorous data to support such claims; but rather
compilations of anecdotal statements that do not stand up to review.
Nonetheless, many shooters are tempted to spend money on these and other treatments to
improve accuracy, and feel it appropriate to add their opinions to the public record.

Last edit: 11 years 6 months ago by mrraley.

Please Log in or Create an account to join the conversation.

More
11 years 6 months ago #23150 by OleCowboy
Replied by OleCowboy on topic Cryogenic Processing for Gun Barrels

mrraley wrote: ArmaLite Technical Note 103

We’ve been asked by a number of our customers why we don’t cryogenically treat our
barrels. So, we’ve written this Tech Note to address our beliefs regarding cryogenic
treating.

Cryogenic treating of barrels (cooling the barrel to a VERY low temperature [from -100
to -320 degrees F]) is offered by several companies. Many claims of increased life,
accuracy, etc have been made for such treatment.

We have found no scientifically rigorous data to support such claims; but rather
compilations of anecdotal statements that do not stand up to review.
Nonetheless, many shooters are tempted to spend money on these and other treatments to
improve accuracy, and feel it appropriate to add their opinions to the public record.


While cryo treating (as opposed to Cold Treating) works well my guess Is ArmaLite is right on. Both treatments affect unlike metals differently. I think before they or anyone jumped on it it might be wise you see if the metal you are using is responsive and provides 'which' benefits.

This came up in my discussion with Keirger and they do for stress relief before and after working the steel. I cannot remember if they do cryo or cold treatment.

Another thing they do or in this case do not do is straighten the bbl, its really a go/no-go. They work to an accuracy of .0001 and lap to 16 microinch, half the standard for National Match.

I cannot find a lot of support for cryo on bbls outside of stress relief.

ArmaLite always seems to be smart, very smart...

Please Log in or Create an account to join the conversation.