RCBS Matchmaster Neck Bushing 2 Die Set .300 Winchester Magnum

• Interchangeable neck-bushing system: lets the reloader tune neck tension for a specific brass lot and bullet combination, helping produce more consistent release and better cartridge uniformity.
• Micrometer seating adjustment: makes seating-depth changes precise and repeatable, which is especially useful when refining loads for long-range or precision rifle ammunition.
• Neck-sizing configuration: sizes only the neck rather than working the full case body, reducing brass working and supporting longer case life in ammunition fired from the same rifle.
• Titanium carbide expander: reduces drag and brass buildup during sizing, which helps cases run more smoothly and keeps the loading process more consistent over longer sessions.
• Standard 7/8"-14 thread fit: works with common reloading presses, so it integrates easily into an established bench setup without requiring special adapters.

About the MatchMaster Series

RCBS MatchMaster dies sit at the precision-focused end of the RCBS die lineup, built for reloaders who want tighter control over the variables that influence concentricity, neck tension and seating depth. The series is aimed at shooters developing ammunition for long-range, target and other accuracy-driven rifle applications, where small changes in bullet hold or seating depth can show up on target.

A defining feature of the MatchMaster series is its use of interchangeable neck bushings in the sizing die, allowing the user to select the amount of neck tension instead of relying on a fixed internal dimension. RCBS pairs that approach with micrometer-style adjustment on the seating die, making repeatable tuning more straightforward when testing loads. The series is also built around careful alignment during the seating process, with design details intended to support straighter bullet entry and more consistent finished cartridges. In practical use, MatchMaster dies are meant for reloaders who value measured adjustment, repeatability and a more deliberate approach to building rifle ammunition.

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

The RCBS Matchmaster Neck Bushing 2 Die Set .300 Winchester Magnum is configured for reloaders who want fine control over ammunition for the .300 Winchester Magnum without giving up the convenience of a two-die bench setup. It combines a competition-style neck sizing die with a micrometer-adjustable seating die, giving the user direct control over two of the most important variables in precision handloading: neck tension and seating depth.

The neck-sizing die uses an interchangeable bushing system, so the case neck can be sized to suit the brass and bullet combination rather than forced into a one-size-fits-all dimension. That matters when building loads for a magnum rifle cartridge, where consistent bullet release can help reduce variation from shot to shot. Because the die sizes the neck instead of the full case body, it is well suited to brass that will be returned to the same chamber, while also reducing unnecessary working of the case.

The seating die uses micrometer adjustment, which makes small seating-depth changes easier to track and repeat during load development. The set is made from steel, uses a titanium carbide sizing component for smoother operation, and fits presses with standard 7/8"-14 thread. For reloaders building accurate .300 Win. Mag. ammunition, this die set is designed to make adjustments more deliberate and results more consistent.

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 Huntington developed, and that beginning established RCBS as a specialist in ammunition handloading rather than a general shooting brand. RCBS continues to manufacture reloading tools in Oroville, California, and its product range covers the core equipment used across rifle and pistol cartridge loading.

RCBS is known for presses, dies, shell holders, powder measures and priming tools, with product lines that span single-stage, turret and progressive press systems. That broad reloading focus is what gives the brand its reputation: practical bench equipment designed around repeatable ammunition assembly, from basic handloading tasks to more exacting precision work.

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: 7.82 mm / 308.00 inch
• Compatible calibers: .300 Winchester Magnum, .300 WM

Warranty

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