I figured it was aimed at the smokless powders but was not to sure about what makes some of the new substitute powders on the market. Some are sugar based, and who knows what the rest of them are..

I knew a fellow that made some black powder once. I asked him how it was and he said it fizzled is all. I asked him if he tried to shoot any, and he said no.. but he packed some in a CO2 empty cartridge tank from a pellet handgun, put a fuse on it and a wax seal and set it in the ground under a coffee can. He said they lite the fuse and ran like the devil. He said there was a lot of smoke, no boom, and they were too scared to go back and see what really happened, so they threw rocks at the coffee can...