So I was melting some little bits and pieces along with a handful of culled bullets when my neighbor brought me a ball of what looked like lead? I quickly took the torch to it and sure enough it quickly got soft and began to run so I threw it in my pot. As it started to melt I could see what looked like silver ribbons. I went to pull them out and they began to fall apart. Don't know why there would be aluminum in a ball of lead, but I grabbed my bear up mold and poured some bullets. Once cool, I checked weights with other bullets I casted with the same mold using pure lead and sure enough the weights were quite different. Even the sprues didn't frost over like normal and the surface looked a lot like orange peels. Luckily I was just cleaning up and wanted to consolidate what scraps I had laying around. I also did the finger nail test on the new bullets and old bullets. I am thinking it was either aluminum foil or some kind of candy wrappers.