RCBS X Die Small Base Die Set .308 Win

Description

The RCBS X Die Small Base Die Set for .308 Win is a mandrel-based small-base sizer paired with a standard seater die designed to stabilize bottleneck case length after an initial trim. The mandrel assembly includes an expander ball and a decapping pin, and the patented geometry minimizes case mouth growth during repeated sizing. After trimming .020 inch from maximum case length, cases sized with the X Die typically stabilize below maximum length without a measurable loss of accuracy or case life, according to the manufacturer’s description.

Key Specifications

• The manufacturer is RCBS.
• The product is the X Die Small Base Die Set.
• Designed for the cartridge .308 Win.
• The set includes a X Die Small Base Sizer and Standard Seater Die when ordered as a set.
• The mandrel features a decapping pin and expander ball.
• The design eliminates the need for repeated trimming after an initial trim of .020 inch off maximum case length.
• The mandrel reduces case growth caused by the case mouth contacting the mandrel, yielding stabilized case length with repeated sizing.

This die set provides a practical approach for reloaders who prefer a mandrel-based small-base sizer to control case growth and minimize repeated trimming. It suits reloaders looking for consistent, repeatable case sizing for .308 Win without sacrificing case life or accuracy.