The RCBS MatchMaster Competition Full Length Bushing 2-Die Set – .204 Ruger is a premium mechanical reloading system designed to maximize bullet concentricity and precisely control case neck tension. Featuring a standard 7/8"-14 thread pitch, this two-die set is fully compatible with standard manual reloading presses. It contains a Full-Length Bushing Sizing Die to guarantee reliable chambering across different firearms, alongside a MatchMaster Seating Die featuring an open-window bullet loading design and a free-floating, self-centering sleeve to ensure perfect alignment before seating.

Key Features

• Full-Length Bushing Sizing Die: Resizes the entire case body for reliable chambering while utilizing interchangeable neck bushings (sold separately) to let reloaders set exact neck tension without overworking the brass.
• TiCN Coated Expander: The Titanium Carbo-Nitride coated expander ball reduces drag and prevents brass build-up, ensuring smooth extraction during the sizing cycle.
• Loading Window Seating Die: Allows handloaders to drop the bullet directly into the side of the die body. An internal self-centering sleeve captures and aligns the bullet with the case neck.
• Micrometer Adjustment: Features an oversized, highly visible micrometer dial that allows for bullet seating depth adjustments in increments of 0.001 inches.

Product Specifications

• Calibre Compatibility: .204 Ruger
• Manufacturer Part Number (MPN): 10308 (R10308)
• Thread Pitch: Standard 7/8"-14 thread
• Adjustment Increments: 0.001 inches
• Bushing Sizing Formula: Requires interchangeable neck bushings (sold separately) sized by measuring the outer neck diameter of a loaded round and subtracting 0.002 to 0.003 inches.
• Included Components: One Full-Length Sizing Die, one Micrometer Seating Die, a spare decapping stem assembly (including an expander ball stand-in), and a reloading data sheet.

Who is the Rcbs 204 Ruger Matchmaster Competition Full Length Die Set for?

• Competitive benchrest shooters loading 204 Ruger — require the ultra-precise 0.001-inch increments of the micrometer adjustment on the Rcbs 204 Ruger Matchmaster Competition Full Length Die Set to dial in exact seating depth for optimal bullet concentricity and benchrest accuracy.
• Precision long-range shooters utilizing 204 Ruger — benefit from the ability to precisely adjust case neck tension using bushings sized 0.002 to 0.003 inches below the outer neck diameter of a loaded round, minimizing brass overworking and maximizing shot-to-shot consistency.

Less suitable for: reloaders who are loading exclusively for a single, custom bolt-action rifle with fire-formed brass. In this specific scenario, a neck-sizing-only die is more suitable than a full-length sizing die to minimize the cold-working of the brass body and extend case life.