
Availability: In Stock
The RCBS Matchmaster Competition Neck Bushing Set for .300 RUM gives precision reloaders the tools to dial in consistent neck tension and minimize case work—a proven system favored by benchrest and long-range competition shooters. This set includes interchangeable neck bushings that let you fine-tune the amount of tension applied to your bullet, preserving case life and maintaining the tight tolerances that separate match winners from the rest of the field. Built from case-hardened steel with precision-drilled and hand-polished internals, these dies are engineered for the shooter who demands repeatability and longevity from their reloading bench.
The Matchmaster seater die is where precision meets practicality. Its oversized adjustment knob features large, easy-to-read hash marks and letters, letting you dial in bullet seating depth to one thousandth of an inch with confidence. The exclusive loading window eliminates the awkward balancing act of positioning a bullet on a case mouth—simply drop the bullet in and run the press. An internal sleeve catches and aligns each bullet with the case, guiding it into the seating chamber for concentric results that rival custom work.
If you're running a precision rifle setup for competition, long-range hunting, or load development, the ability to swap neck bushings without changing dies is a game-changer. You can optimize bullet grip for different bullet weights, brass sources, or load recipes without investing in multiple sizing dies. The careful machining and deep blue finish reflect RCBS's commitment to quality—these aren't throwaway tools, they're career reloading equipment.
| Product | RCBS Matchmaster Competition Neck Bushing Set |
| Caliber | .300 RUM |
| Material | Case-hardened steel |
| Finish | Deep blue (seater die) |
A neck bushing die sizes only the neck of the case rather than the entire cartridge, and the interchangeable bushings let you control exactly how tight the bullet fits. This is critical for precision shooting because consistent neck tension means consistent bullet runout and better accuracy. Benchrest and long-range competitors have relied on this system for years.
Yes. The bushings in this set are interchangeable, so you can swap them out to adjust tension without needing separate dies. This is a major advantage if you're loading different bullet weights or working with brass from different sources.
The loading window is an internal feature that holds and aligns the bullet as you lower it into the case. You simply drop the bullet in from above, run the press, and the die guides it into perfect position. No more balancing bullets on case mouths or risking your fingers.
This is a neck-sizing system. If you need full-length sizing for your .300 RUM loads, you would want a different die set.

SKU: 167525731 • Width: 4.5in • Height: 1.75in • Depth: 5.95in • Weight: 1.47oz
Availability: In Stock
The RCBS Matchmaster Competition Neck Bushing Set for .300 RUM gives precision reloaders the tools to dial in consistent neck tension and minimize case work—a proven system favored by benchrest and long-range competition shooters. This set includes interchangeable neck bushings that let you fine-tune the amount of tension applied to your bullet, preserving case life and maintaining the tight tolerances that separate match winners from the rest of the field. Built from case-hardened steel with precision-drilled and hand-polished internals, these dies are engineered for the shooter who demands repeatability and longevity from their reloading bench.
The Matchmaster seater die is where precision meets practicality. Its oversized adjustment knob features large, easy-to-read hash marks and letters, letting you dial in bullet seating depth to one thousandth of an inch with confidence. The exclusive loading window eliminates the awkward balancing act of positioning a bullet on a case mouth—simply drop the bullet in and run the press. An internal sleeve catches and aligns each bullet with the case, guiding it into the seating chamber for concentric results that rival custom work.
If you're running a precision rifle setup for competition, long-range hunting, or load development, the ability to swap neck bushings without changing dies is a game-changer. You can optimize bullet grip for different bullet weights, brass sources, or load recipes without investing in multiple sizing dies. The careful machining and deep blue finish reflect RCBS's commitment to quality—these aren't throwaway tools, they're career reloading equipment.
| Product | RCBS Matchmaster Competition Neck Bushing Set |
| Caliber | .300 RUM |
| Material | Case-hardened steel |
| Finish | Deep blue (seater die) |
A neck bushing die sizes only the neck of the case rather than the entire cartridge, and the interchangeable bushings let you control exactly how tight the bullet fits. This is critical for precision shooting because consistent neck tension means consistent bullet runout and better accuracy. Benchrest and long-range competitors have relied on this system for years.
Yes. The bushings in this set are interchangeable, so you can swap them out to adjust tension without needing separate dies. This is a major advantage if you're loading different bullet weights or working with brass from different sources.
The loading window is an internal feature that holds and aligns the bullet as you lower it into the case. You simply drop the bullet in from above, run the press, and the die guides it into perfect position. No more balancing bullets on case mouths or risking your fingers.
This is a neck-sizing system. If you need full-length sizing for your .300 RUM loads, you would want a different die set.
SKU: 167525731 • Width: 4.5in • Height: 1.75in • Depth: 5.95in • Weight: 1.47oz
