Silver Bullets Options

I couldn't find a thread on weapons. More specifically blatant weaponery, like daggers, guns, arrow, sword etc so feel free to move this topic or creating a new thread. I'm looking at making silver bullets right now and I was wondering if there was a specific way they're suppose to be made. And no, they won't be for just looks.

Getting silver is not much of a problem. I'm not sure if a mixed silver alloy or coat silver bullet does the same job as a pure silver(or close to pure). I've tried making a mold out of polymer clay, but apparently the mold shrinks a bit when it's fired in the oven. The bullet turns out a but smaller than the casing. Size is a .22 caliber. I'm a bit nervous when it actually comes to taking apart a bullet. Although I've only done it once before, it was out of stupid curiousity. I'm still looking stuff up, like tools, and safety instructions.

Actually I've been teaching myself how to craft rings, I just happen to have some silver leftover from that. I'm not really a gun ho kind of person. Interersting enough my dad told me about a weird experience back in the "old" country. But that's a story for another time.