My normal cleaning procedure is to spray the barrel with CLR, let it sit for a few minutes, run a bore snake through it, spray more CLR and run the bore snake again. When I look at the barrel, it looks clean.
I took out some guns from the safe yesterday and inspected the barrel. They were all cleaned and not fired, but in looking at the barrel, it looks like there is still residual gun powder in the rifling of the barrel.
Anyone know what that is from?