Originally Posted by
ofitg
Nobade, my "recipe" for the Span-Am War mix -
I pre-mix the potassium chlorate with sodium bicarbonate in a 25:1 ratio - eg, 2.5 oz of potassium chlorate to 0.1 oz of sodium bicarbonate - add a few spoons of water to form a "ketchup" consistency, stir thoroughly, then dry.
Weigh out the following dry ingredients -
17 grains of the potassium chlorate/sodium bicarbonate powder
9 grains of antimony sulfide
3 grains of sulfur
4 grains of fine sand (passes through a 40-mesh screen)
These dry ingredients are then mixed - a safe way is to pour them back and forth between two pieces of paper.
Next I add 1/3 CC (the small LEE powder measure) of Zinsser "Bulls Eye" clear liquid shellac from the hardware store. This product is advertised to be 21% shellac solids by volume. This works out to almost one grain of shellac solids per 33 grains of dry ingredients - almost 3% concentration, but it works fine.
Next I add enough denatured alcohol to achieve a "toothpaste" consistency for loading... since I'm loading percussion caps instead of primers for metallic cartridges, the subsequent steps are not applicable to this thread.