The American Civil War made many these weapons, starting from so-termed “volley” guns that sprayed quite a few rifle bullets suddenly like a shotgun, to multishot, semi-automatic weapons such as the Agar machine gun, which was nicknamed the “coffee grinder” for the way it fed its ammunition. Best known was https://machguns.com/product/american-180-tuned-by-val-cooper-excellent-w-extras-b01033/