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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Cryoing??
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<blockquote data-quote="4mesh063" data-source="post: 29132" data-attributes="member: 941"><p>Charlie, </p><p></p><p>What does Cyro do?</p><p></p><p>A year ago I'd have said, "It lightens your checkbook by ~$100.00"</p><p></p><p>Now, you're safe because the barrel mfgr's are not allowed to do it. (after production).</p><p></p><p>I was told (by a representative of Kreiger) that initally, it is done because the barrels are less likely to be scrapped in the machining process. I believe most of that was in the tapering process but it has been a long time. I paid for the 2nd cryo on my barrels and I thought they were just great. Then I chose to not do it and that barrel was fine. Then I decided to do it to the next and was told that 2nd cryo wasn't offered. Because of the above mentioned litigation. That's a bunch of bunk, but, we have laws and someone feels infringed upon.</p><p></p><p>According to Kreiger, it made NO difference to the barrel for the customers sake, only that it was easier for them to machine and less likely to be scrapped. That's why they do every single barrel they make (pre-production). Even knowing this, (like every other crazy gun person) I paid for the "possibility" that it may help because I need every .001% I can get. It doesn't bother me a bit that it's not offered anymore, and I don't think my gun knows the difference.</p><p></p><p>From a metalurgical standpoint, most people who know anything about steel like to avoid the subject. That's what I've found. They don't seem to beleive that it does anything. I can think of one in particular who has worked with cryo'd parts 3 decades ago and said it was an outright waste of time. </p><p></p><p>For stress relief, I would say, take the gun out in 100 degree heat and shoot 100 rounds rapidly or until you smell the stock smoking. There, all the stress is gone! This freezer thing (from the stress point of view) i don't buy a bit. Not saying I don't like the idea, just that for "stress" I don't think there's anything to fix. </p><p></p><p>Now, if someone told me that they wanted to ship my barrel by rail to the west coast, then back to the east coast and that that would relieve stress, now I'll buy that.</p><p></p><p>But then, this is usually 416 stainless, not L6 or A2 or 01. I can see with my own eyes how a slug of A2 shatters in a day or two if you don't draw it after it comes out of the oven. There's one on the bench at work right now, a rockwell test piece that didn't come out as planned and wasn't drawn. But, Leaded 416SS to have stress that needs removed? I could beleive that it could change some property of the steel, though I don't know what and however slightly it may change, but it's stress relief claim is going a bit far I think.</p></blockquote><p></p>
[QUOTE="4mesh063, post: 29132, member: 941"] Charlie, What does Cyro do? A year ago I'd have said, "It lightens your checkbook by ~$100.00" Now, you're safe because the barrel mfgr's are not allowed to do it. (after production). I was told (by a representative of Kreiger) that initally, it is done because the barrels are less likely to be scrapped in the machining process. I believe most of that was in the tapering process but it has been a long time. I paid for the 2nd cryo on my barrels and I thought they were just great. Then I chose to not do it and that barrel was fine. Then I decided to do it to the next and was told that 2nd cryo wasn't offered. Because of the above mentioned litigation. That's a bunch of bunk, but, we have laws and someone feels infringed upon. According to Kreiger, it made NO difference to the barrel for the customers sake, only that it was easier for them to machine and less likely to be scrapped. That's why they do every single barrel they make (pre-production). Even knowing this, (like every other crazy gun person) I paid for the "possibility" that it may help because I need every .001% I can get. It doesn't bother me a bit that it's not offered anymore, and I don't think my gun knows the difference. From a metalurgical standpoint, most people who know anything about steel like to avoid the subject. That's what I've found. They don't seem to beleive that it does anything. I can think of one in particular who has worked with cryo'd parts 3 decades ago and said it was an outright waste of time. For stress relief, I would say, take the gun out in 100 degree heat and shoot 100 rounds rapidly or until you smell the stock smoking. There, all the stress is gone! This freezer thing (from the stress point of view) i don't buy a bit. Not saying I don't like the idea, just that for "stress" I don't think there's anything to fix. Now, if someone told me that they wanted to ship my barrel by rail to the west coast, then back to the east coast and that that would relieve stress, now I'll buy that. But then, this is usually 416 stainless, not L6 or A2 or 01. I can see with my own eyes how a slug of A2 shatters in a day or two if you don't draw it after it comes out of the oven. There's one on the bench at work right now, a rockwell test piece that didn't come out as planned and wasn't drawn. But, Leaded 416SS to have stress that needs removed? I could beleive that it could change some property of the steel, though I don't know what and however slightly it may change, but it's stress relief claim is going a bit far I think. [/QUOTE]
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