I don't have any experience with this powder - is it a true "black powder" or a substitute? Thanks.
I suppose that the only real BP replacement is Pyrodex. Both BP and Pyrodex, are sulfur based propellants. American Pioneer, is just another replacement propellant in a long string or generation, that is not Sulfur based. There have been many, like Black-mag, Clean-shot, Clear-Shot, 777 and so on. Supposedly, two of the latest and greatest are Black-horn 209 and now, White-hots ....
I shoot American Pioneer FFFG in my ROA, .45. .36 and .32 SideLocks.
Be Safe !!!