Originally Posted By: PA24
Originally Posted By: Nitro Express
Too little is no good, if too deep the receiver is prone to cracking.


Nitro Express:

Incorrect......."the depth of hardening is ultimately limited by the inability of carbon to diffuse deeply into solid steel".....check with any metal laboratory or metallurgist.....

That is why for over 150 years it was called the "hardened skin"....


PA24, you are incorrect..... see 2-piper's reply reference thin cross sections of the receiver, trigger mounting plate, opening lever and small parts. If you look at enough re/cased receivers and parts you'll start seeing cracks. And may I ask where you took your degree in metallurgy??