K&M - Expander Mandrel Powerstroke Size:30 cal 257 Roberts

257 Roberts

001" increments) as those used in our bushing style neck style neck sizing dies

5) You want to check factory ammunition you have purchased

these bushings are machined to exacting tolerances to ensure reliable results every time you use them

Have a look at the list at the bottom of this page to see all the possibilities and then select or choose from the dropdown bar and add to cart

K&M - Expander Mandrel Powerstroke Size:30 cal 257 RobertsVirgin 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