Well yeah.... but do you know how much silver bullets cost? And I can use ‘em on werewolves too.
There’s a pretty intensive website on “silver bullets”, believe it or not. What started out as a lark became quite the ordeal for this guy.
The short answer is, silver bullets are just about impossible to make interestingly enough. It melts at a much higher temperature than lead, and doesn’t lend itself to casting, as it absorbs oxygen. So special undersized molds have to be used. I think he ended up machining billet to get something that would work.