RCBS Full Length Die Set - Group D - Bottleneck Rifle Cartridges .338 Norma Mag

The RCBS Full Length Die Set for .338 Norma Mag (Group D) is a precision reloading die set engineered for bottleneck rifle cartridges. This three-piece die set includes a full-length sizer die with integrated expander-decapping unit, a seater die, and bullet seater plug. Purpose-built for precision rifle shooters and handloaders seeking consistent case preparation and reliable ammunition assembly, this die set brings cases to SAAMI minimum cartridge dimensions and establishes proper headspace control for repeatable performance downrange.

The full-length sizer die resizes the outside diameter of the case, removes spent primers through the decapping unit, and expands the neck to precise specifications for bullet seating. Integrated air vents prevent case damage from trapped air and excessive lubricant buildup—a critical feature when working with magnum bottleneck cartridges like the .338 Norma Mag, where consistent neck tension directly affects accuracy and velocity stability. Headspace is held to minimum tolerances throughout the sizing stroke, ensuring that fired cases return to factory specifications and perform reliably across multiple loading cycles.

This die set is essential for reloaders working with the .338 Norma Mag—a modern magnum cartridge increasingly favored for long-range hunting and precision rifle competition. The full-length sizing approach accommodates bolt-face variations and chamber tolerances, making it ideal for shooters with multiple rifles or those loading for firearms with tighter or looser chambers. RCBS die sets are engineered to operate with standard single-stage and progressive presses, integrating seamlessly into established reloading workflows. Whether preparing match-grade ammunition for competition or reliable field loads for hunting, this die set delivers the precision and durability that serious handloaders expect from RCBS tooling.