SEHunter, you can also set the die to a given height in the press then lock its ring snug on the press onto it. That'll stay there so every time you tighten the die into the press, it'll be at the same place. That's what that lock rings on reloading dies are for.
Best thing about the Redding stepped shell holders is if you full length sizing die needs to be .004" above a .125" high standard shell holder to set your fired case shoulders just right, use the .129" one that's .004" higher than standard and set the die such that the shell holder just touches the bottom of the die when sizing cases. A bit of "cam over" on the press handle ensures the case goes all the way into the die. This makes sized case headspace very, very uniform.
Last edited by Bart B.; November 18, 2012 at 01:06 PM.