Originally Posted by
grumman581
When I melted down my first batch of wheel weights, I ended up with some that didn't melt, so I suspect that they were zinc. As such, I don't think my pot was getting hot enough that I need to worry about zinc contamination. Perhaps if I had used the top flame via propane weed burner technique that some are using, I might have had to worry about it.
I've noticed that there are some manufacturers who are making zinc bullets due to requirements for some ranges to be lead-free. If so, then how does it act when mixed with lead in bullets so that most casters consider it a contamination?