I have a pair but in .357mag. One of the pair gummed up pretty fast. I had to ever-so-lightly dress the barely noticeable high spots on the back of the barrel on it. After that both have done well with BP and 777. I don't think I removed more than a half a thou off two areas (not the whole surface).
With over 15 perCUSSIN' revolvers, I've been called the Imelda Marcos of cap & ball.
SASS#3302 (Life), SASS Regulator, NRA (Life), DGB#129
Wolverton Mtn. Peacekeepers (WA), former Orygun Cowboy (Ranger, Posse from Hell)