Cryo-Accurizing

asop

Has anyone had this done to their firearm? Just wondering if this procedure produces any measurable improvement? Thanks

MG1890

From what I have read, it's inconclusive.

From an engineers' standpoint, what could it hurt to have it done?

SP45

According to Kreiger Barrels they have not been able to show any difference however it does have something to do with stress relief in the barrel. They say their cutting tools last much longer with barrels that have been cryoed.

perry shooter

WHAT COULD IT HURT[?]your wallet [}:)]

beantownshootah

quote:Originally posted by perry shooter
WHAT COULD IT HURT[?]your wallet [}:)]


This, though the "injury" probably won't be that bad. This company only charges $50 for the service. That would be a "bargain". . .if it actually worked.

Edit: Sorry, forgot link: http://www.diversifiedcryogenics.com/gunbarrels.html

quote:Cryo-Accurizing relieves stress in firearm barrels through deep cryogenic tempering. Stresses cause a barrel to bend or warp as it heats from repeated firing -- warping causes walking, stringing or wandering in the shot group. Deep cryogenic tempering process relieves internal stress in the firearm so the barrel will no longer bend or warp. In addition, your firearm will be easier to clean and give you increased performance, increased accuracy and extended barrel life.

The Process

Deep cryogenic tempering is a one-time, computer-controlled process where metal is cooled slowly to deep cryogenic temperatures (-300 F), and slowly returned to room temperature. The metal is triple-tempered as the final step in the process. This dry process permanently refines the grain structure of a firearm barrel at the atomic level, producing a samegeneously stabilized barrel. The denser, smoother surface reduces friction, heat and wear. The result is better shot groups in handguns and rifles and more consistent coverage and placement of shotgun patterns. Your barrel will last longer, be stronger, shoot better and be easier to clean!

Does it work?

I have no idea (and to the extent it does, its probably "more so" with certain types of barrels than others), but I'm pretty skeptical that it does.

charliemeyer007

I'm not sure about accuracy improvements, perhaps after it was bored and straightened. I wonder if hard spots are normalized thus the cutting tools last longer?

http://www.300below.com/

machine gun moran

Cut rifling in previously stress-relieved barrels produces the most dimensionally stable ones. 'Hammer-forging' can only induce stress, but those barrels seem to give adequate performance over the long term anyway. From what I've read on the results of the cyro processes, some barrels marginally improved in accuracy, and some worsened. Most showed no appreciable change. All depends on what somebody wants to do with their money.

SP45

Last I heard Murray State College (gunsmithing dept) was set up to cryo and were going to do a bunch of testing to try to prove one way or the other what benefits you get. You might contact them.