What ever happened to Cryo treated barrels?

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Winger Ed.

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I remember when they were the rage.

Back then:
If you didn't get your barrel cryogenically treated,
dipped in liquid Nitrogen, at about 350 degrees below zero--
You were some sort of backwoods, ignorant hick.

Years ago, I trashed a Rem. 700 in .270 my Mom gave me.
I was carrying a deer down a hill and fell.
In the pile up of me, the deer, and the rifle-- the rifle was on the bottom.

The barrel was bent, the stock shattered, and the scope crushed.
But I rebuilt it. Making it my first custom rifle.

I put a Cryo treated, .30-06, Shilean barrel on it;
because Midway had them for a pretty good deal,
and it was only a few bucks more than a non-cryo treated one,
plus, I didn't want to be a ignorant, backwoods hick-- and not do it.

But,
Its like paying for 'Martinizing' your clothes at the dry cleaners:
How do ya know if ya got it or not,
and even if you did, what's the difference?

It shoots fine, as you'd expect, but I never could tell any difference between
it's cryo-treated barrel, and just a regular one with the same heavy varmit profile.

.
 
Yeah I was wondering about the Cryo treatment myself. It just fizzled away like so many competition "voodoo" secrets.

There was that place in Atlanta about 15 years back that was doing them. Anyone else had a barrel treated lately?
 
It got the cold shoulder.

No one warmed up to it.

It got frozen out.


<rimshot>

Thank you, thank you very much. I'll be here all week. Please tip the waitresses...

:D
 
well played RNB65


its generaly seen as a gimmic these days, like, tactical,energy transfer, and heckler and koch

all marketing
 
I think the problem with cryo was misinformation about what it was for and how it was done.
Cryo treatment stress relives the barrel, this is beneficial if you shoot rapid fire, you don't have stringing of the groups. If you shot slower it will have less of an effect. If the barrel shot bad before it will shot bad after, I think the statements about improving accuracy were based on the rapid fire improvements.

I cryo every barrel blank before machining because it seems to machine better, After the barrel is chambered and contoured I cryo it again, All of my tooling, drills, end mills, chisels saw blades are also cryoed and I know for a fact they stay sharp longer.

The process of cryoing isn't as simple as dropping the part into a tub of liquid nitrogen and pulling it out. To be done correctly the part is put in to a type of freezer that takes the parts down to zero and holds them their for a certain amount of time then the temperature is dropped farther and held again this series of steps is done until the temperature reaches 300 below zero it is held their for a period of time then brought back to room temperature in the same series of steps it went down in. After reaching room temp it is put into a heat treat oven at 300 degrees for 1 to 2 hours to temper the part.
 
It was reported that the treatment improved some barrels, but not all!
Some remained the same, with some worst. No way to predict the effect
other than it was supposed to remore metal stress, but with mixed results
how would one know if it will be worth the cost.
 
Seems like every motorcycle rally has a vendor set up selling cryo spark plugs at double the cost of premium ones. They promise 10% horsepower and 5-10% fuel economy increase. Please tell me this is just a hoax!
 
From Shilen barrels site:

Should I "cryo" my barrel?

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.
 
It's so you can shoot those damned "ice bullets" they're always fussing about on Myth Busters...
 
reminds me of 'electric bedding' in the 1950s. Eventually we learned to live without that as well.
 
It's kinda like Micheal Jackson in his hypobaric chamber at night, didn't do much good.
 
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