If we can’t shoot lead, that only leaves say, spent uranium, or tungsten (the stuff in the middle of all our Ft. Knox gold), or silver.
Ha - now I can use my bow & be environmentally friendly, too.
SILVER? Have you ever tried to cast silver bullets?
I have and I can tell you the lone Ranger didn’t cast
his own. Silver requires a much higher melting point
with a consequent higher solidification temp.
Almost impossible to cast in bullet molds, it
freezes before filling the cavity.
Centrifical casting or sand or cuttle bone
molds would work.
I once melted down some silver a jeweler friend had
gotten on a trade, it was an ingot the size of a
loaf of white bread, Spanish treasure, proof marks etc
we cast it into smaller blocks so he could handle it.
I got the leftover bits and tried to cast bullets from
it but even preheating the molds was not successful.
No wonder there are so many werewolves.