I don't post often but Ive searched and haven't found an answer...
Third time I've bought lead on Ebay and this time it has some amount of zinc. Surface of the heated lead turns purple. No my lead isn't too hot. My mold won't fill out with this batch of lead leaving rounded corners and especially bases. No my lead isn't too cold.
Here's the kicker - I have a Lee production pot that has the flow valve underneath. If I hold the fill hole in the mold up against the flow valve when I open it, it forces the mold to fill out and I get perfect looking bullets - which still have zinc in them. Since I can get normal looking bullets I'm tempted to go ahead and use them even if they have zinc. Does a zinc bullet do something bad when it strikes a deer?