How is gunpowder explosive? – SidmartinBio
· How long should you ball mill black powder? between 2 and 4 hours Powerful black powder can be made with mill runs of between 2 and 4 hours. Use long drop cords. Unplug the cords at the electrical source, not at the ball mill, when you want to stop the mill. Do modern bullets use gunpowder? Do Modern Bullets Use Gunpowder?
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