You can blend the clip on wheel weights and soft lead in a 50-50 mix. and have a very useful alloy .
When I had a free unlimited WW supply I cast everything of straight WW's , it is actually a little too hard for general handgun use ..the 50-50 mix works better and makes a dandy hunting boolit in a rifle load .
The softer boolit of the proper size works better for general use.
Gary