If you have acess to an outdoor range as I do; you can go on days that are slow like Monday mornings. I bring a rake and rake the dirt barriers. Lead slugs are usually considered hard, unles 4570 or 45Lc or ball, all jacket bullets have soft cores that is almost pure except some tin to help it adhere to the jacket. I use the lead bullets for my modern casting and the jacketed cores for b/p. I've gotten 150lbs in about 20min.. Our range also has a cowboy action area and it's full of flat pure lead slugs, I usually surface shovel it into a box with 3/8" hardware cloth across the bottom. I was lucky to get free ww's back when the garages had to pay to have them removed, still have 200+ lbs of them.