Hello: My believe the difference is that. If your going to shoot a black powder gun. Then use black powder. I've tried the pyrodex, I belong to a muzzleloader club. I took the pryodex out and let anybody use it that wanted to. Well out of about 20 shooters. they said pour it out on the ground and light it. Get rid of it. don't buy any more of it. But I gave it a good try it didn't always go off. miss fire's. hangfire's , you name it. I can use black all day long and never have any trouble. Just my two cents. PeteDoes anyone know the difference between black powder and pyrodex?