Folks-- some time back an old gentleman I know, who used to cast and reload, sold me all his old lead ingots. I've been gradually working through them and melting into smaller ingots that will fit my casting pot. They all look like lead/tin mix and are fairly soft. Today, I melted down one of the ingots, and when it was completely melted, I added a second to the pot. The second one was heavy just like the others and looked and sounded like lead-- but I didn't check hardness. here's the weird part-- when I added that second ingot to the existing melt it literally boiled-- and the whole thing melted in about 3 seconds flat! It was about 3 pounds or so. When I say "Boiled" I mean it looked just like I was boiling water! It didn't spit like if you get a little water in the pot-- and the ingot was bone dry when I put it in-- but it boiled. Anyone ever see this before? what metal that looks like lead and is heavy would do that??