I' m nothing but impressed with T-7! It contains little sulphur which doesn' t create the corrosion that black powder/Pyrodex creates. It wipes down easily with only water (I use Water and Spit Bath afterwards). It doesn' t have the stench that BP has...What else can I say about it. The only thing cleaner to shoot would be a Savage 10MLII with modern smokeless powder (but DON' T try this in any other muzzleloader)!