I have a Ballistic Products roll crimper in a press drill, works well for me, but I bought their cartridge clamp, whatever you call it, I clamp the base of the shell in it, pop in the overshot wad, fire up the drill press and lower it down. I get a really good job on Federal Gold Medal paper hulls as the wax comes out under the heat of friction and lubes the crimper. I just wish they made a hull cutter for lenght which works easily. Mine is a real pain. What to you fellas use to shorten hulls to 2 1/2 or 2 1/4"
Mike