My objection to black powder is strictly personal and I am not advocating against it-" some of my best friends" use it. As a matter of fact, I just read an evaluation of a new black powder substitute that hopefully will work for me. It is classified as a flammable solid, which is good for shipping, but I don't I don't know if will cause the bullet to obturate like "real" black will. Thirty years ago, I talked my friends into buying "Golden Powder" for our annual primitive weapon deer hunt and it was so inconsistent we couldn't sight the rifles in. I still haven't lived that down, even though some of my friends have passed on.
Mike