I've been thinking of a project. Procuring copper tubing as close to finished bullet size as possible. Filling it with melted lead, gas checking it, and run it through a LEE bullet sizing die. The problem is forming the nose. I was considering threading the inside of a LEE bullet sizer and using my trusty Dremel to mill out a nose shaping insert, plop the bullet on the ram, and shove it home with a grunt to form. Any ideas?