The RCBS MatchMaster Duo Die Set for .300 PRC is a premium two-die system designed for precision handloaders. This set combines a rugged, non-bushing full-length sizing die with a highly precise MatchMaster micrometer seating die to deliver exceptional ammunition consistency without the added complexity of interchangeable neck bushings. It is built to operate on standard reloading presses utilizing a standard 7/8"-14 thread interface.

Key Features

• No-Bushing Full-Length Sizing: Features a standard, non-bushing full-length sizing die that resizes brass to factory specifications, ensuring reliable chambering and uniform dimensions.
• Micrometer Bullet Seating Die: Includes a highly precise, repeatable micrometer adjustment scale for exact control over bullet seating depths.
• Top-Load Bullet Window: Features a convenient side-access bullet-drop window that automatically aligns the projectile inside the seating die, eliminating the need to balance bullets precariously on the case mouth.
• Internal Adjustment: Incorporates multiple internal clip positions to optimize the window height and micrometer scale position for varying bullet lengths.
• Benchtop Compatibility: Designed as a purely mechanical tool requiring no electrical power, making it fully compatible with standard Australian reloading benches.

Product Specifications

• Calibre/Cartridge Compatibility: .300 Precision Rifle Cartridge (.300 PRC)
• Thread Interface: Industry standard 7/8"-14 threading
• Number of Dies: 2-Die Set
• Die Types: 1x Full-Length Sizing Die (non-bushing), 1x MatchMaster Micrometer Seating Die
• Required Shellholder: No. 38 shellholder (sold separately)
• Country of Manufacture: USA

Who is the Rcbs 300 Prc Matchmaster Duo Die Set for?

• Competitive precision rifle shooters — require maximum bullet seating accuracy for the .300 PRC cartridge, utilizing a micrometer seating die that mounts securely into standard 7/8"-14 threaded reloading presses to achieve repeatable, micro-adjustable cartridge overall lengths.
• Long-range handloaders — want a streamlined reloading process that skips the complexity of interchangeable neck bushings, employing a standard full-length sizing die paired with a No. 38 shellholder to rapidly resize .300 PRC brass back to factory-compliant dimensions.

Less suitable for: Handloaders seeking to reload alternative .30-calibre variants like the .300 Winchester Magnum or .308 Winchester, as this specific .300 PRC reloading die set cannot accommodate different case geometries and requires dedicated, calibre-specific MatchMaster sets. It is also less suitable for reloaders who require ultra-precise, thousandth-of-an-inch neck tension customization, who would be better served by a dedicated MatchMaster bushing-style die set.