RCBS MatchMaster Micrometer Adjustable Seating Die 24040

The RCBS MatchMaster Micrometer Adjustable Seating Die delivers precision bullet seating control that competitive shooters and handloaders demand. This advanced seating die eliminates guesswork with its micrometer adjustment system, allowing repeatable seating depth changes in 0.001-inch increments.

What Makes This Different

Unlike standard seating dies that require trial-and-error adjustments, the MatchMaster features a built-in micrometer thimble that provides exact, measurable adjustments. The floating bullet guide aligns bullets perfectly before seating, reducing runout to less than 0.002 inches. This precision construction ensures consistent cartridge overall length (COL) shot after shot, critical for accuracy in precision rifle competition and long-range shooting.

Key Features

• Micrometer adjustment system with 0.001-inch increments for precise seating depth control
• Floating bullet guide reduces bullet runout and ensures proper alignment
• Hardened steel construction with precision-machined threads
• Built-in crimping ring for consistent bullet retention
• Compatible with standard 7/8-14 thread reloading presses
• Includes multiple seating stems for different bullet profiles
• Numbered reference marks for quick setting reproduction

The MatchMaster excels in competitive shooting environments where ammunition consistency directly impacts scores. Match shooters rely on this die to maintain identical seating depths across hundreds of rounds, while hunters appreciate the ability to fine-tune loads for different bullet weights without starting over. The robust steel construction withstands the forces of repeated use, maintaining calibration even after thousands of rounds.

Technical Specs

• Thread specification: 7/8-14 TPI standard
• Material: Hardened steel with precision finish
• Adjustment range: Approximately 0.400 inches
• Micrometer graduations: 0.001-inch increments
• Maximum bullet runout: Less than 0.002 inches
• Compatible with all major reloading press brands
• Made in USA with lifetime warranty

Reloaders who demand match-grade ammunition consistency choose the MatchMaster for its proven ability to produce ammunition that shoots to the same point of impact. The investment in precision tooling pays dividends in improved accuracy and reduced load development time.