I have a friend that is an x-ray machine technician. He just gave me several hundred pounds of lead sheeting in various shapes that were removed from the machines. Would the sheets be pure lead? I have usually used wheel weights or an alloy from rotometals. I am assuming I will need to add tin or antimony to the mix. Anyway I am extremely happy! I have used some of it to cast paper patch bullets for my .50-90 and they shot well with no leading