Check out this video to see what happens when a man fires a muzzleloader right above a box of pyrodex pellets.
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This is why gun safety is important. Pyrodex pellets are extremely combustible and it is a good idea to keep them far away from ignition sources such as a muzzleloader.
When a flash hits the pellets they are quickly set ablaze and this guy was lucky enough to be standing a few feet away from the box.
