DO NOT use 4fg Black Powder, USE Alliant brand Bullseye smokeless powder. Screen the KCLO4 w/Dark Pyro Al, then diaper mix the smokeless powder and flash together.
Use “Alliant brand” Bullseye smokeless powder instead of 4fg. Mix the 70/30 flash first, then add an equal amount of the smokeless powder. Strong containment is important for this type of salute. (Bullseye Smokeless Powder contains the highest amount of Nitroglycerin compared to other smokeless powders)