Originally Posted by jimb2
MDJ, just something to be aware of....many of those wheel weights are now made from zinc. You need to sort carefully. If you get a single zinc weight melted into the lead weights, you can ruin a complete batch of bullet metal. The zinc creates problems with clean castings. So if you get those weights, sort carefully. Many are marked Zn, but others aren't. When it comes to sorting remember this rule. When in doubt, throw it out.
I'm a little confused here about zinc. Earlier threads I read here on G&G suggested to cast bullets for high velocity rounds using ratio 50/50 zinc and lead. I bought a bar at the hardware store because of that info. In the near future I'm planning on casting .303s using that ratio.