The RCBS MatchMaster Duo Die Set – .22 ARC (Model R30204) is a premium, bench-mounted mechanical reloading tool designed for high-precision cartridge preparation. This 2-die set combines a rugged full-length sizing die with a highly precise MatchMaster micrometer seating die. Engineered specifically for the .22 ARC (Advanced Rifle Cartridge) calibre, this set allows handloaders to achieve match-grade seating accuracy without the operational complexity of using interchangeable neck-sizing bushings. Built with standard 7/8"-14 threading, these dies integrate seamlessly into the vast majority of single-stage and progressive reloading presses used by Australian shooters.

Key Features

• Precision Micrometer Seating Die: Features a highly precise, micrometer-adjustable dial that allows handloaders to set and fine-tune bullet seating depth with repeatable, micro-fine tolerances.
• Top-Load Bullet Window: Includes a convenient side-loading window in the seating die, allowing users to drop the bullet directly into the side of the die where it is perfectly aligned before seating.
• Standard Full-Length Sizing: The included sizing die resizes the entire length of the brass case back to factory specifications, ensuring reliable chambering and uniform dimensions without requiring separate neck bushings.
• Universal Press Compatibility: Uses industry-standard 7/8"-14 threading to ensure a secure, direct fit on standard reloading presses like the RCBS Rock Chucker.

Product Specifications

• Product Name: RCBS MatchMaster Duo Die Set – .22 ARC
• Model/SKU: R30204 (also listed as 30204)
• Calibre: .22 ARC exclusively
• Number of Dies in Set: 2 (one Full-Length Sizing Die and one MatchMaster Micrometer Seating Die)
• Thread Type: Standard 7/8"-14
• Compatible Shellholder: RCBS Shellholder #32 (sold separately)
• Power Requirements: None (entirely mechanical operation)

Who is the RCBS 22 Arc Matchmaster Duo Die Set for?

• Competitive match reloaders shooting .22 ARC — benefit from the micro-fine, repeatable seating adjustments of this MatchMaster reloading die set, which mounts securely into standard bench presses via standard 7/8"-14 threading to ensure maximum cartridge consistency.
• Varmint hunters handloading precision .22 ARC ammunition — require a streamlined workflow utilizing a 2-die configuration that delivers exact full-length sizing and bullet seating without the operational complexity of purchasing or swapping out individual sizing bushings.

Less suitable for: Handloaders who require ultra-precise neck-tension adjustments down to the thousandth of an inch; for those applications, a bushing-style MatchMaster die set that accepts interchangeable neck bushings is more appropriate. Additionally, because this set is physically restricted to the .22 ARC cartridge, it cannot be used to size or seat other calibres.