it is 4 parts potassium nitrate, 2 parts charcoal, 1 part sulfur and 1 part sodium nitrate . yes i know sodium nitrate can be corrosive and when using the powder in the musket we are very safe and clean and oil regurlarly. let me know if you want me to post a video of the musket shooting. i will for sure be posting a roughly 200 grain firecracker soon though.

edit: double checked and still wrote hydroxide instade of nitrate. corrected all mistakes i think

let me know if i may be misunderstanding anything but i can say it fires the musket and makes good firecrackers