Chow Choker, I have reloaded my own for 35 years, black and smokeless and I knew I should not have asked about Trail Boss, but I could not delete it off the site as it is not allowed. I stated I knew I should not use Trail Boss, I just asked a question, and CoffinMaker was good enough to write me back with his anwser on the question. and I knew well someone would get their shorts in a knot about smokeless in the older guns, as if no one else knew about smokeless in antiques. I have used black powder many many years and in many antiques in 73 years and would never ruin an old firearm, I just ask a simple and I am sure some think a dumb question. Like they say think before you speak, I didn't.