I've melted several tons of lead with zinc weights mixed in. Just don't let your temp get too high and they float to the top with the clips. One you've got a decent pool of lead melted, they pop to the top right quick because they're so much lighter than the lead.

Selmer

"Daddy, can you sometime maybe please go shoot a water buffalo so we can have that for supper? Please? And can I come along? Does it taste like deer?"
- my 3-year old daughter smile