Flash Powder (Magnalium)

From PyroGuide

Magnalium flash is a powerful type of flash powder generally using a powerful oxidizer such as potassium perchlorate, potassium chlorate, and potassium nitrate and magnalium as fuel. Flash, concussion, report, and salute compositions are highly explosive. Extreme care must be exercised when preparing, handling, or using any such composition. It is always recommended to use the diaper method to mix flash compositions. Magnalium flash is some of the best available, and will report unconfined in quantities less than half a gram. Never mill or hand grind flash powders!

Composition

Potassium perchlorate	50
Magnalium (-325 mesh)	50

Potassium nitrate based

Potassium nitrate	60
Magnalium	30
Sulfur	10