Re: Krieger barrels
Interesting topic, perhaps I can muddy the waters a bit. Wear between two dissimilar metals would normally expected to sacrifice the softer of the two and often does. But not always. As an aviation accident investigator in the Army I had the unwelcome task of convincing "superior" officers that one crash caused by loss of control had in fact been caused by a .015" thick aluminum tab wearing through a 3/16" 19 strand stainless control cable after a nylon bushing had fallen free. Tough sell but an indisputible fact. Sometimes softer metal become embedded with abrasive materials and causes wear. The example above...I know what happend and am clueless as to why.
I use brushes, nylon and bronze. I use patches, and when I feel the need, JB Borecleaner. I don't at this time have rifles that shoot bugholes at 800 yards, but when the day comes I suspect it will have similar responses to fouling as my pathetic 1/2 to 3/4 MOA shooters do today. When it gets bad enough, accuracy goes south. Then I gotta do what I gotta do...regardless of who made the barrel and what kind of air they were blowing out of what hole, measured by what gauge.