So I bought 1000lbs of range scrap from the local range about a year ago and finally got around to cleaning it. I normally use an old Lyman Big Dipper pot for this but decided to stop by the local Good will and pick up a used stainless steel pot. Found a pot, positioned my weed burner under it and got to work. Everything seemed to be working fine until I fluxed the cleaned lead with paraffin candle wax. The lead got slushy on top but I poured ingots anyway. Today I tried to cast with that lead and no go. Couldn’t get a good boolit to save my life. In fact it plunged the spout on my bottom pour pot. So where could I have gotten the zinc from? Bullet jackets? Any ideas would be great. Thanks