I went to the Dentist today to have my teeth cleaned and checked out. I remembered the discussions here about lead foil that is around the X-ray film. After taking my X-rays, I asked the technician what they did with the lead in them after the film was removed. She said that some guy used to pick it up for making fishing sinkers, but he is no longer with us. They had nearly a box full and were wondering how to get rid of it.
I graciously offered to take it off their hands without charging them a penny, and any more they are ready to throw out in the future. She got the Dentist and he agreed to let me have it. It was in a small cardboard box filled nearly to the top that was waiting for me when I left. It turned out to have between 18-1/2 and 19 pounds of lead foil in it. I already have it melted down and cast it into ingots. I marked them "DL" for "Dental Lead".
I have been using scrap lead from houses in the late 1880's to 1930's for casting my 41 Long Colt bullets for CAS shooting. That is softer than most scrap lead (about Bhn 4.5 to 4.7), but I am willing to bet that this stuff is even softer. The next time I cast up some 41LC bullets, I am definitely going to give this stuff a try.