K&M - Expander Mandrel Powerstroke Size:375 cal You will at least need

You will at least need a "Fired Case Holder for your cartridge

Removable steel thread to add f

Redding also makes the following accessory VLD seat stemss for use with many popular VLD style bullets

Surface material: Pimpled rubber

With the NEW Case Gage Depth Micrometer you can do just that

K&M - Expander Mandrel Powerstroke Size:375 cal You will at least needVirgin competition Brass isnt quite ready to Neck Turn when you buy it. And the commercial die manufacturers have no set standards for the Expander button in their dies. Large variations from manufacturing to manufacturing and even within a given manufacturing makes it necessary to properly size the inside diameter before turning. Dont be fooled by slick talk. The turning pilot cannot be used to correctly expand the case neck because of the elasticity