<Related to old cap guns and our experiences with caps>
Yeah, smokeless powder goes "fzzzzzzzz", black powder goes "FOOM !"
The powder in firecrackers and other fireworks is normally not black powder, but is "flash powder," with different ingredients and is a lot more energetic and unsuitable for guns. The powder used in caps is a percussive powder, also with different ingredients.
Hence the "DDTAH" warnings if you don't really know the details of what the hell you are doing.
The movies always show a trail of powder leading to the room full of powder kegs and when lit, it burns slowly toward the kegs and meantime two characters fight each other with the approaching danger of getting blown up and finally the hero wins out and gets the hell out of Dodge and the powder kegs go off.
Nope. "FOOMBOOM" is more likely.
It's getting hard to find videos of comparisons of BP and Smokeless open burning rates. Somehow, I regard that, if deliberate on the part of search engine saints, as lying by omission.
</Related to old cap guns and our experiences with caps>
Terry, 230RN