PMA Tool

PMA Tool Expander Die


One of the most critical elements of accurate, consistent case neck turning is the fit of the cases on the neck turning mandrel, not loose or sloppy, not too tight. Expanding the necks of new cases with a properly sized expander mandrel mounted in an expander die accomplishes this important first step. The PMA Tool Expander Die is nicely machined from stainless steel, and it allows the expander mandrel to œfloat in the die body and find the true natural center of each case. This die body accepts expander mandrels from PMA Tool (see 30-127 to 30-135 on this site), Sinclair and many others with a 3/8 shank. Expander Die comes complete with an aluminum lock ring, fits all 7/8-14 reloading presses. Expander mandrels sold separately. Made in the USA.

SKU: 30-002-125


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Pma expander die and mandrels

Works awesome if you are trying to get consistent neck tension! Use as an additional step in the process in replacement to an expander ball.
Posted by Jake, Feb 20th 2020