RCBS Matchmaster Neck Bushing 2 Die Set .338 Lapua Magnum

• Neck-bushing sizing system: Uses interchangeable bushings to set neck tension more precisely, helping handloaders tune bullet grip for more consistent release and better concentricity.
• Micrometer seating adjustment: The oversized micrometer makes seating-depth changes easy to repeat, which is useful when refining loads for different bullets or chamber preferences.
• Competition-style seating die: A free-floating, self-centering seating design helps align the bullet with the case during seating, reducing runout and supporting more uniform ammunition.
• Titanium carbide expander: The sizing die uses a titanium carbide expander to reduce brass buildup and promote smoother case extraction during the loading process.
• Standard 7/8"-14 compatibility: Fits common reloading presses, so the die set integrates easily into established rifle reloading setups without special adapters.

About the MatchMaster Series

The RCBS MatchMaster series sits at the precision-focused end of the company’s rifle die lineup, built for reloaders who want tighter control over the variables that influence consistency. These dies are aimed at long-range and precision rifle loading, where repeatable neck tension, accurate seating depth, and low runout matter more than simple high-volume output. Across the series, RCBS combines bushing-based sizing options with micrometer-adjustable seating systems so the user can make deliberate, measurable changes instead of relying on trial-and-error adjustments.

A defining trait of the series is its emphasis on alignment and repeatability. MatchMaster die sets are offered in neck-size bushing and full-length bushing configurations, along with dedicated seater dies, allowing reloaders to choose a setup that matches their rifle, brass management routine, and accuracy goals. The dies are made from case-hardened steel with carefully finished internal surfaces, reflecting a design philosophy centered on smooth operation and consistent case handling. In practical terms, the MatchMaster family is intended for shooters who want to tune ammunition around a specific rifle and cartridge rather than accept one fixed sizing approach.

About the RCBS Matchmaster Neck Bushing 2 Die Set .338 Lapua Magnum

The RCBS Matchmaster Neck Bushing 2 Die Set .338 Lapua Magnum is built for reloaders working with a cartridge that is commonly chosen for long-range precision shooting. In this format, the set combines a neck-sizing die with a dedicated seating die, giving the user direct control over two of the most important loading variables: neck tension and seating depth. Because it sizes only the neck rather than the full case body, this type of die set is especially useful when brass is being kept with the same rifle and the goal is to preserve case fit while refining consistency.

The sizing die uses a competition bushing neck die, which allows neck tension to be tuned by selecting the appropriate bushing rather than accepting a fixed internal diameter. That matters when working with .338 Lapua Magnum loads, where small changes in bullet hold can influence ignition consistency and downrange behavior. RCBS also uses a titanium carbide expander to reduce brass buildup and keep operation smoother over repeated loading cycles.

The seating die is equally focused on repeatability. Its micrometer adjustment makes seating-depth changes easy to track and return to, which is helpful when comparing bullet designs or refining jump to the lands. A free-floating, self-centering seating stem supports straighter bullet alignment during seating, helping reduce runout. Combined with standard 7/8"-14 thread compatibility, the set fits naturally into a serious rifle reloading bench built around careful, repeatable ammunition development.

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 the beginning, RCBS focused on tools for ammunition handloading, and that specialization still defines the brand today.

RCBS manufactures reloading tools in Oroville, California and is known for equipment covering a wide range of rifle and pistol loading tasks. Its catalog includes dies, presses, shell holders, powder measures, and priming tools, with options for single-stage, turret, and progressive loading setups. In 2024, RCBS became a brand of Hodgdon Powder Company after its sale by Revelyst. Within the reloading category, RCBS has a long-established reputation for practical, purpose-built tools designed for both routine handloading and 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: 8.58 mm / 338.00 inch
• Compatible calibers: .338 Lapua Magnum, .338 LM

Warranty

2 years. This RCBS die set is covered by a 2-year warranty, making it a clear, time-defined option for reloaders who prefer stated warranty coverage in years.

In the Box

• Neck size bushing die
• Seater die
• Plastic storage box