I have a Lyman Plains Pistol and a TC Renegade that I first shot using Pyrodex in the late 80's - early 90's. I cleaned them with TC's #13 bore cleaner, followed by some Bore Butter. I was transferred a couple of times with my job, and never got around to shooting these guns again until a year or two ago. I was a little afraid of what I'd find in the bores - as nothing else was ever done to them. After wiping out the bores, they looked perfect. I have no complaints about Bore Butter. :grin: