2-die and 3-die set differences? (General)

by Graham, Sunday, March 09, 2014, 19:08 (2348 days ago) @ David Carlson

The third die is often a flaring, neck sizing or expanding die. Two die set does not flare the case mouth. In a two die set, the first die deprimes and sizes the case, and as the case is pulled from the die the neck is pulled over the expander ball on the decaping rod, normaly opening the case mouth up just enough to give a good tight fit to the bullet shank. It just opens/expands the case mouth after sizing without flaring it. This may or may not be enough.

I see the Lee .43 Spanish two die set includes a full length sizer, bullet seater and roll crimper, built in stuck case remover, long guided expander. But you can also purchase a neck expaner die separately.

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