Interesting.... my mantra/learnings was---> if any fouling was left in the "corners" of the lands/grooves....it was said the metal "underneath" the fouling was then subject to corrosion, resulting in a "pitted" barrel. Or is "pitted" barrel syndrome only for the old ammo that uses corrosive primers?
Meaning?---> if we now follow the "do not over-clean" idea....would that smidgen of junk left behind on the sharp corners of the groove/land area...be a problem or not.
BTW.....just to add complexity to the problem, my Gov't 45 has been totally treated with an "Armoloy" surface....the entire gun including the inner surface of the barrel. An "industrial chrome" plating service that is extremely thin ( less than 0.0001 " thick) and is used by industry for cutting machines and such. Supposed to limit wear and corrosion. Been applied over 25 years ago and still looks good. Don't know if this process or company is still in vogue or in business..
Just found this moments ago as part of a quick web search--- >
http://www.armoloy-il.com/corporate/are.html
PS - ---I have a nice, vintage Colt Woodsman mag that even allows the bottom-plate to be removed for proper cleaning. Years ago I tried ( not very hard) to make this fit the Challenger, the grip angles are identical and the build-architecture is the same, but I can't remember why it didn't work...I think the hold-down button interfered or was on the wrong side?....can't recall.
Nice getting back in the saddle on this hobby again..... I thank you all for the comments so far.