I forgot about Triple Seven. I shoot the Pyrodex pellets out of my inline because they can be used in WV, and plain old Goex black powder in my flintlock for PA hunting and in my Civil War rifles and carbines because no black powder substitutes can be used in N-SSA competition, which I compete in. I don't worry about how dirty any of the powders are because my rifles are always cleaned immediately after I'm finished with them and they are thoroughly cleaned. If you take your time and do it right, you'll never ruin a muzzle loader barrel and it will continue to shoot accurately and work just as well as the first time, sometimes even better.