First I've heard of that brand. My only question would be if it's actually real black powder. At first you would think so, but if you dissect the labelling...
"American Black Powder, Inc." - The name of the company. It doesn't necessarily indicate anything about what's in the can. They could make car tires under that name if they wanted to.
"Propellant for Black Powder Firearms" - Could be real black or could be a substitute. Taken by itself, that labelling sounds to me like a substitute.
"Proudly made in the USA" - It seems like if another blackpowder mill opened in the US they'd make a bigger deal about it and it would be big news. I think if it is real blackpowder and they're making it in the US then they're missing the opportunity to make announcements and promote the brand on forums like this one. It would be big news to us.
The side label isn't clear in that picture, maybe it would shed some light on it.
I really do hope it's real black powder and another domestic source has opened up, but I'm skeptical. If I had to guess one way or another, I'd guess it's a substitute marketed under a creative brand name to allude to it being blackpowder without actually saying such. I hope I'm wrong though.
Edit: Well I'll be the first to admit when I'm wrong... it doesn't happen often (Unless you ask my wife) but this looks like this might be one of those times based on this thread:
PA making BP
@ftg99 , can you fill us in?
