I cast from tin or pewter metal, using re-melted old "lead free" pellets that I collect in a rag-box pellet trap, but old pewterware would also work. Lead swages easily, but I'm not sure tin will work in pellet swagers designed for lead; classically tin can be hammered into shape but one would need a sturdy swager with a long lever or big hammer!
For casting I've been happy with the NOE molds, they have a variety from .22 on up: diabolos, wadcutters, longer "magnum" diabolos, and a couple flavors of slugs. I also have MP Molds' .22 and .25 torpedo-shaped slug molds, and surprisingly they actually shoot OK from some guns; my Dragonfly Mk1 loves to lob their .22s, if only at ~480fps, but what a whack when it finally lands on target! Anyway, casting has become a hobby within the hobby. I use a Lee 4# melter pot and mold handles, a pressure pour ladle, bits of old candles for flux and an old spoon to skim dross, and a short stick to whack the mold sprue plate open. I still work outside from the wax smoke and fumes but at least it isn't lead fumes.