Re: Cleaning and accuracy fall-off
M PRO 7 and sweets 7.62 when needed. The rifle WILL NOT shoot as good when clean. There's a difference in a "cold bore" and a "clean bore". I always "foul" my rifles before shooting groups, or at game, because when that brrl strips copper, it creates a "new" surface if you will. After a break in, and I start to not see alot of blue/green copper fouling, I use M PRO 7. I do not think a nylon brush will get all the crud out of the lands and grooves, so I do pass a bronze brush toward the muzzle a cpl times, let soak, and patch it. I used to clean (scrub the crap) out of the barrel after every outing, whether it was a 2 groundhog day or 10, but have learned that I was hurting my barrels life more than helping. So now I clean (remove copper) when I see accuracy drop, foul a cpl rounds, and get back to target.
I also am NO EXPERT. But this works for me