[tri70]

I have not seen a mini 14/30 in 3 months. I don't know about QC, not many complaints here.

 

[tri70]

Goony, get someone on the line to answer a question for me.

Does Ruger cryo treat their barrels for the mini or bolt guns?

 

[tri70]

Hellgate, I know they emailed that they did not cryo treat but Ed Harris had stated they did cryo treat mini 14 barrels and firing pins. Since we have someone that may be able to clarify the conflicting info with inside personell, I asked the question to Goony.

I sent this to Ruger CS with the web page to verify.

From Ed Harris;

Some types of stainless, such as used for Mini-14 firing pins and barrels and Redhawk revolver cylinders, would get a nonconventional cryogenic stress relief rather than the usual low temperature (1045-1050 deg F) "bake" to normalize. This, combined with the particular chemistry we used, resulted in firing pins which were file hard but which you could bend into a pretzel shape without any cracks, and barrels you could elevate to cook off temperature with 180 rounds of full auto fire then set up a bullet-in-bore obstruction and fire a proof load in the hot barrel without it bursting. Try THAT with an M16!
Ed Harris on Metallurgy | General gun stuff, Shooting industry | GrantCunningham.com

 

[tri70]

Thanks Goony! It answers the question for if we need it or not. The skinny barrels would heat up and string shots real bad, I had mine done and the stringing went away. My new models don't string after barrels warm up, no need to cryo, maybe just better metal.

 

[tri70]

I did get the same answer as Hellgate got from Ruger CS reguarding the cryo treating of barrels and pins.