Quote:
Originally Posted by Russell E. Cleary
“Innerstructure corrosion”. As a layman I can’t imagine a more insidious-sounding barrel affliction.
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Russ, do you mean '
Inter-granular Corrosion? This is a condition where attack takes place withing the grain boundaries. Generally associated with Austenitic stainlesses, and not unheard of in inadequately heat treated carbonsteel.
I can, as least conceptually, see where corrosive residue from primers and powder, will form acidic compounds given enough moisture. This would be much more serious in pattern welded barrels, less so in carbon steel barrels of reasonable metallurgy and sound heat treat practice.