I wonder what I was doing wrong. Maybe mine was the .125 short version and not the .100 short. I even tried reaming the step out but that did not work either. If memory serves me, I had about a .005 step in the brass. Bullets would just stop dead when seating. Don't know, many moons ago. Boring worked fine, but was a lot of work. Just my experience with the cartridge.I just turn the necks like I normally do, no issues whatsoever.
Two passes with the turner tool.
CW
Paul