weasel i would have thought it would have been easier to size it , seat a bullet and push it out to the lands and grooves.
i would have thought this would have the bullet seated better to get a better measurement.i have put a bullet in some fired cases and found that most can be pushed through easily.
what i would like is to make a dummy case of each bullet i shoot . this way i can put it in a shell holder and set my seater die to it.
i'll try it one day i think i'll order one next time i get bullets.