Re: help barrel will not clean
Copper solvent and any copper/bronze implements will equal a blue/green patch regardless of the presence or absence of copper fouling in the bore.
My bore cleaning rods and slotted tips are steel, period.
Bronze brushes are nearly never employed, just solvent and patches.
Fast, I use Outer's Foam; slow, I soak with regular Hoppe's #9.
Only time I employ a bronze brush is when borescope indicates a resistant carbon ring, and then, brushes are used to thoroughly distribute solvent, and no other reason. Personally, I believe bronze brushes are probably ineffective against glazed on crud. Further, I am not totally against the use of stainless brushes, but I reserve them for when there's little left to lose anyway. The only rifle that was <span style="font-style: italic">that</span> bad was a Garand with a pretty hopeless barrel anyway.
I will never, never, never, ever, ever, ever employ abrasives inside a custom honed barrel. With solvent, time is on my side, and no barrel is ever so badly needed, like right now, that I will resort to 'emergency' measures. I will cancel my participation in a match, rather than compromise my barrel with ill advised cleaning techniques.
Greg