RCBS Matchmaster Competition Neck Bushing Set .300 Rum is a precision neck-bushing set designed to work with RCBS Matchmaster dies for the .300 Rum cartridge. Matchmaster dies are manufactured with case-hardened construction and internal surfaces that are precision-drilled, reamed, and hand polished for long service life. The interchangeable neck-bushing system lets reloaders set consistent neck tension while minimizing brass work.
Key Specifications
- The manufacturer is RCBS.
- The product is identified as the Matchmaster Competition Neck Bushing Set.
- The intended cartridge is .300 Rum.
- The die construction is case hardened steel.
- The finish on the seater die is deep blued.
- The dies have internal surfaces that are precision-drilled, reamed, and hand polished.
- The system uses interchangeable, self-centering neck bushings for adjustable neck tension.
- The seater die includes a loading window and oversized adjustment knob to aid consistent seating.
- The listed weight is 1.47.
- The listed shipping weight is 1.47.
Built for precision reloading and competitive use, the Matchmaster Competition Neck Bushing Set provides the level of control and repeatability precision shooters expect. Its interchangeable neck-bushing design and carefully finished internal surfaces help reduce case work and improve consistency during seating and sizing operations, making it a practical choice for serious reloaders focused on accuracy and case longevity.









