Do you skip the expander mandrel?

[Mike D Texas]

Has anyone used a holder that allows standard machinist gauge pins to be used as the mandrel?

The pins are quite a bit less expensive - a set of 10 carbide pins in .0004” increments is only about $100, or a full set of pins to cover all cartridges in .001” increments is about $200.

This is really the process Lee uses with their collet neck dies. That have a collet with an internal mandrel. They make various sizes of mandrel.


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