BP sounds like a PITA to me, why would you want to load with it, whats the advantage? cost? fun?
Im not tryin to be a smart a$$ or anything I just never got it.
I load and shoot alot of .45 Colt, usually with Trial Boss, I got a old can of fff that Ive been avoiding for years.
I can tell alredy Im gunna be loadin up some of these pretty soon, Im curious