Quote:
Originally Posted by Pathfinder76
You are concerned about work hardening brass as well. A bushing die allows you to size the outside dimension of the neck minimally. Then bring it to final ID with a mandrel.
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I read somewhere that they found that they had better groups with a non bushing die and a mandrel over a bushing die mandrel combo. The thought was that a bushing die doesn’t do the entire neck, there is always a little bit of a gap at the bottom. But that was just what I read and the difference wasn’t world changing