I made the gunpowder by using potassium chlorate , permanganate,nitrate. I noticed that the most powerful was of chlorate and the tube in which i used
to place gunpowder and measure the distance travelled by the metal ball placed in that tube was most travelled by using chlorate , then permanganate
then nitrate but in chlorate it was extremely friction sensitive . In permanganate i have to use lot of permanganate to make gunpowder and it was
costly compared to both. Nitrate was fine but it needs a long ball milling time as compared to chlorate and permanganate so my final conclusi
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