Been working on a TC .56 S.B. Renegade. Someone donated this to our BSA camp, it’s a milled out .54 cal rifled Renegade, for MA/RI only, a 1970-90 workaround for state hunting regulations that only allowed Smooth Bore (S.B.) black powder for deer season, rifled allowed after ~1990.
Scothbrite on the cleaning jag and steel wool on a 3/8” drill spun dowel.
First picture is muzzle, second is initial rust removal patches. Still working on her, but have fired 10 rounds .550 PrB with lubed .010 patch. Most patches came out whole with appropriate wear, some got ripped up, so more honing in my future.
Second photo shows blood red rags, through sort of almost clean rags.