RCBS Matchmaster Neck Bushing 2 Die Set .300 Norma Magnum

• Micrometer seating adjustment: The MatchMaster seating die uses a micrometer-style adjustment head, making it easier to return to a known seating depth and fine-tune loads for consistent cartridge overall length.
• Interchangeable neck-bushing sizing: The neck sizing die accepts changeable bushings so neck tension can be tuned to the brass and bullet combination, which helps support more uniform release and repeatable accuracy.
• Titanium carbide expander system: The sizing die uses a titanium carbide expander surface to reduce brass buildup and lower drag during extraction, helping produce smoother operation over long loading sessions.
• Free-floating seating alignment: The seating system is designed to self-center the bullet during seating, which helps reduce runout and supports straighter, more concentric ammunition for precision rifle loads.
• Standard 7/8"-14 press fit: With standard threading, this 2-die rifle set fits common reloading presses, making it easy to integrate into an established precision reloading setup.

About the MatchMaster Series

RCBS MatchMaster dies sit at the precision end of the company’s rifle reloading range, aimed at reloaders who want tighter control over the variables that influence consistency. The series is built around features that matter in long-range and precision shooting, especially micrometer seating adjustment, neck-bushing control, and seating systems designed to improve cartridge concentricity. Rather than treating sizing and seating as basic operations, MatchMaster dies are configured to let the loader tune neck tension and seating depth with more repeatability.

Within the RCBS lineup, the MatchMaster family is intended for shooters working with carefully prepared brass and load development routines where small changes can show up on target. The series includes both full-length bushing and neck-size bushing sets, along with dedicated seater dies, so users can choose a setup that matches their rifle, brass management method, and accuracy goals. Case-hardened steel construction, polished internal surfaces, and oversize adjustment components reflect a design philosophy focused on repeatable setup, smooth operation, and precise ammunition assembly rather than high-volume output.

About the RCBS Matchmaster Neck Bushing 2 Die Set .300 Norma Magnum

The RCBS Matchmaster Neck Bushing 2 Die Set .300 Norma Magnum is built for reloaders who want close control over ammunition for a powerful .300 Norma Magnum precision rifle. Its two-die layout combines a Competition Bushing Neck Die with a micrometer-adjustable seating die, giving the user direct control over two of the most important tuning points in precision handloading: neck tension and seating depth. For a cartridge commonly used in long-range shooting, that level of adjustment matters because it helps the loader build ammunition that is more uniform from round to round.

The neck sizing die uses interchangeable bushings to size only the neck, which is useful when loading brass for the same rifle and trying to preserve case fit while tuning bullet hold. Because the bushing is selected separately, the die can be matched to the actual brass thickness and desired tension instead of forcing every case through one fixed dimension. The titanium carbide expander helps reduce drag and brass buildup, which supports smoother operation and more consistent neck work over time.

The seating die complements that approach with a micrometer adjustment for repeatable seating-depth changes and a free-floating, self-centering seating system that helps keep bullets aligned as they are seated. In practice, this makes the set well suited to careful load development for long-range or precision shooting, where concentric ammunition and repeatable setup are more important than speed. Its standard 7/8"-14 thread also makes it easy to use on common single-stage and other compatible presses.

About RCBS

RCBS was founded in 1943 by Fred T. Huntington in Oroville, California. The company name came from “Rock Chuck Bullet Swage,” the original bullet-swaging die that started the business. From that beginning, RCBS developed into a specialist in ammunition handloading and reloading equipment for rifle and pistol cartridges, with a product range that includes presses, dies, shell holders, powder measures, and priming tools.

RCBS remains closely associated with reloading tools made in Oroville, California, United States, and its lineup covers single-stage, turret, and progressive press systems as well as the supporting tools needed for load development. In 2024, RCBS became a brand of Hodgdon Powder Company after its sale by Revelyst. For products such as the MatchMaster die series, RCBS is known for combining practical bench use, caliber-specific tooling, and adjustability aimed at reloaders who want repeatable results.

Main Features

• Manufacturer: RCBS
• Made in: USA
• Die operation: Bullet seating, Decapping, Neck sizing
• Pack size: 2 die set
• Die type: Bushing
• Bushing: Yes
• Bushing style: Competition Bushing Neck Die
• Case body design: Bottle neck
• Case type: Rifle
• Sizing die material: Titanium carbide
• Material: Steel
• Adjustment: Micrometer
• Press compatibility: Standard 7/8"-14 thread
• Bullet Diameter (mm).: 7.82 mm
• Bullet Diameter (inch).: 308.00 inch
• Compatible calibers: .300 Norma Magnum, .300 NM

Warranty

2 years. This RCBS die set is covered by a two-year warranty period.

In the Box

• Neck size bushing die
• Bullet seating die