My modified ball mill using brass balls
75 parts KNO3. 5 parts Charcoal Mix 2: 10 parts Charcoal. 10 parts Sulfur. The charcoal helps to keep the nitrate from caking, and is a non-flammable mixture. The second mix is just everything that's left over. Milling with too small of a load is also relatively dangerous as it increases ball on ball impacts.
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