RCBS Full Length Die Set - Group D - Bottleneck Rifle Cartridge .350 Rem Mag

The RCBS Full Length Die Set – Group D – Bottleneck Rifle Cartridge .350 Rem Mag (MPN 33701) is a precision reloading die set engineered to restore fired cases to SAAMI minimum specifications. This two-die set includes a full-length sizer die with integrated expander-decapping unit and a seater die with bullet seater plug, delivering the dimensional consistency required for reliable .350 Rem Mag ammunition across repeated reloading cycles.

The full-length sizer die performs three critical functions: it resizes the case exterior to SAAMI dimensions, decaps spent primers, and expands the neck to accept a new bullet. Integrated vents prevent case damage from trapped air and excess lubricant buildup—a design feature that extends case life when reloading magnum rifle cartridges. Headspace is maintained at minimum tolerance to prevent unwanted case body lengthening, a concern in bottleneck cartridges where chamber pressures can reach 65,000 PSI or higher. The seater die allows precise bullet seating depth control, critical for optimizing powder compression and velocity consistency in the .350 Rem Mag platform.

This die set serves hunters, precision shooters, and ammunition reloaders who demand repeatable performance from the .350 Rem Mag cartridge. Whether working up loads for medium-game hunting, load testing for accuracy validation, or achieving consistent ammunition supply, this RCBS set provides the tooling foundation for quality handloaded rounds. RCBS is recognized for manufacturing tolerances and quality control in the reloading industry, making this Group D set a dependable long-term investment for serious reloaders.