I like playing with the old crimpers, but if you're doing a 100 or 150 at a time it's a lot easier on the hand and wrist to use one meant for a drill. For BP I cut a 46 bushing in half for around 85grs or plug the inspection hole in the bar and not use a bushing for around 100grs. I don't remember exact numbers right now, it's been a while for loading smoke.