ORIGINAL: mossbergman11
ORIGINAL: octafoil
Mossbergman....I've cleaned some nasty weapons for other people before, especially muzzle loaders and what I've found work best for some bad build up is....runbore cleaner with a bore brush heavy in the barrel a few times. Let it sit for a couple of hour just like that. Thenrun the brush with cleaner a couple more times. Take a couple of patches thru it. Now this I think does the trick...I tear up a old Tee shirt and make "tight" patches a force them thru the barrel ( by tight I mean snug) I do this with clean tees until they come clean. Then oil'er up as prescribed. On some of the tougher Muzzle loaders, I've left the bore cleaner in over night.
what do you mean by leaving the bore cleaner in over night?
I ran the bore brush thru the barrel sloppy/very heavy with bore cleaner and let it set withoutrunning a patch. The cleaner soaked into the foul, next morning I ran the brush with cleaner a couple of times, and the fould lifted out of the barrel. Then I did the snug patch several times and all was clean. This crap was stuck in the rifling, couldn't even see a groove it looked like a smooth bore before I started. That was the most severe case I ran into, most times let the cleaner soak the foul longer than usual, usually does it. Snug patches several times is key also