The Neck/Shoulder Sizing Bushings are designed for use with Short Action Customs Modular Sizing Dies, specifically for the 6.5mm Creedmoor cartridge, with a diameter of 0.289 inches.
They feature new internal bushing geometry aimed at reducing neck runout and increasing loaded cartridge concentricity, improving overall precision.
Constructed from 17-4 H900 stainless steel with a heat treatment process for a smooth interior and slick exterior finish, enhancing durability and performance.