The Neck/Shoulder Sizing Bushings are designed for the Modular Sizing Dies by Short Action Customs, specifically for the .308 Winchester cartridge, to precisely adjust neck sizing and bump amount.
They feature innovative internal geometry aimed at reducing neck runout and enhancing loaded cartridge concentricity in the chamber.
Constructed from 17-4 H900 stainless steel with a heat treatment for durability, these bushings boast a highly polished interior and slick exterior finish.