OK, this has probably been hashed out dozens of times here or on other forums, so if others have already been there I would welcome being pointed the correct direction for the information.
However, I am just tossing the idea around of loading some Black Powder subsitutes (SP!) in my 45/70, with cast boolits of course, but don't recall seeing much written on the subject.
I want to do a bit more testing this Spring/Summer with the goal of shrinking my cast boolit groups, so the thought of trying this alternative powder crossed my mind.
Sorry, don't want to go there with the REAL Black Powder, although I am aware it is a great way to go for some situations.
Keep em coming!
Crusty Deary Ol'Coot