@drgo ...and muskets can be used with actual gunpowder, which is a lot easier to make from scratch than smokeless powder.
@pete @drgo DIY smokeless is in the works though. Twitter accounts @cathode_g and @freegunzone are experimenting with DIY berkeland-eyde reactors for the nitric acid and then making nitrocellulose. Here are the files for Cathode's reactor. https://keybase.pub/cathode/Birkeland-Eyde%20and%20nitrocellulose(WIP)/
@pete @drgo Black powder's a pretty good low-tech backup. Incarbonite (@freegunzone) even got the semi-auto .45 3D printed Hi-Point to cycle with black powder loads. https://twitter.com/freegunzone/status/1299912184584052736?s=20