I have a couple of Enfields, a No 4 mk II, and an SMLE, with mega dirty barrels(recent purchases and came that way). I've put like 50 plus patches plus fired some rounds through both this weekend, they are still so filthy. Every patch comes out heavily soiled.

No sign of rust, it just looks like lead and powder fouling.
I have a brass rifle brush, kind of worn, and what I do is cut squares of an old white cotton shirt I use for a rag, soak them in bore cleaner and push them through the bore from the breech. They wind up tightly wrapped around the brush.
I have US Vietnam era bore cleaner in the green plastic bottle and CLP.

Any magical tricks to suggest? My buddy said he once took over 2 months to clean the barrel in a Ross rifle. Alternate cleaning and firing a round, and finally it came clean.
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