Took a primer in a .45 shell and shot it inside my workshop sounded like a fire cracker. I've tumbled finished rounds, had to remove bullets and primers to resize, they have fell, I've vacuumed them up. Just store your powder in a metal storage unit, away from heat or sparks. Gun powder will just burn rapidly, I had a friend toast himself with Coleman lantern gas, one in a million. NO distractions when loading, an experienced person can give valuable advise, Always look at the load in the shell, before pressing. I use a little magnetic led light to see into the shell, use a good scale. Welcome to the world of your own accuracy.