RCBS Full Length Die Set - Group D - Bottleneck Rifle Cartridge .32-40 Win

The RCBS Full Length Die Set – Group D – Bottleneck Rifle Cartridge .32-40 Win (SKU RC32501) is a precision reloading tool designed for shooters who reload vintage and classic rifle cartridges. This two-die set brings fired cases back to SAAMI minimum dimensions while maintaining tight headspace control, essential for consistent chamber fit and reliable ignition across multiple reloading cycles.

The set comprises a full-length sizer die with integral expander-decapping unit and a seater die with bullet seater plug. The sizer die features precision venting to prevent case bulging from trapped air and lubricant excess—a critical design feature for bottleneck cartridges where case neck integrity directly affects bullet runout and concentricity. The die is engineered to de-prime fired primers cleanly, expand the case neck to precise diameter for bullet seating, and resize the case body to factory specification without inducing unwanted case hardening or length growth. The seater die allows precise control over bullet seating depth, critical for .32-40 Winchester ammunition where magazine and chamber clearances are tight.

This die set serves hunters and precision shooters working with classic lever-action rifles and falling-block single-shots chambered in .32-40 Win, a cartridge popular in Sharps, Winchester, and Marlin platforms. Reloaders restoring vintage rifles or those seeking superior accuracy from period-correct ammunition will find RCBS's rigid construction and proven design maintains the dimensional standards necessary for safe, consistent performance in older chambers where tolerances may have loosened slightly over decades of use.

RCBS die sets are industry standard for bottleneck rifle cartridge reloading. This Group D set is compatible with standard single-stage and progressive press mounting systems and works with standard shellholders for the .32-40 Win cartridge (sold separately).