As I have been casting more lately it has come up that I may want to try to make some weird ammo and I am unfamiliar with that aspect of law, and basic duckduckgo searches have yielded not much useful. I see a lot of fun experiments on youtube and wanna try my own, but maybe laws n' stuff.
What I am looking for is any laws that may restrict what kind of ammo can be made by a non-FFL. I was thinking of doing stuff like putting flechettes in boolits or **** (or even just normal flechette loads) like that and I can't find coherent information on it. I know my state does not have any restrictions on "armor piercing" or anything like that, but I don't know my way around federal law.