Ardent,

I haven't tried this yet myself but I think the Lee die might work even better if you used a conical stone and brought the teeth of the collet to more of a chisel edge. In the 380, if I'm not very careful, I can compress the heel of the bullet when I crimp, the case springs back a little and I can then rotate the bullet in the case. I'll report back if and when I try it. If you get around to it I'd be very interested in the result.