Re: Copper, and more copper!!!!
I live in an area that requires the use of solid copper ammunition for hunting. I've been using the Barnes bullets with good results, except for dealing with copper fouling. A couple of my rifles need very little work to remove this buildup, but one (a Browning A-Bolt in 7mm r.m.) takes two hours of work with CR10 to get clean. The gun responds to thorough cleaning by shooting tight groups for about 25 rounds before opening up again. My patches look like the ones pictured but it takes over a dozen cycles of bore scrubbing with solvent followed by a patch to thoroughly remove the copper.
Life's too short to shoot an ugly gun.....