I don't see any regulations getting "stricter". Trend is to add instead of take away. If you really get down in the weeds, what is "black powder"? I think the manufacturer of the "true" stuff (Elephant?) has shut down the production line. So then you are left with BP substitutes like Triple7, Blackhorn and such. Whenever there is an opening in a market, somebody will formulate/design something to take advantage of it.