The RCBS 7mm PRC MatchMaster Duo Die Set (Model R28104) is a premium, two-die system designed specifically for precision rifle reloaders and competitive shooters loading the high-performance 7mm Precision Rifle Cartridge. By combining a standard full-length sizing die with a highly precise, micrometer-adjustable seating die, this set bridges the gap between straightforward, reliable case preparation and elite-level bullet seating accuracy. This mechanical tool features a standard 7/8"-14 thread pitch, making it compatible with most standard single-stage and turret reloading presses.

Key Features

• Micrometer-Adjustable Seating: The MatchMaster seating die features a premium micrometer adjustor graduated in highly precise 0.001" increments, allowing handloaders to make repeatable, microscopic adjustments to bullet seating depth and cartridge overall length.
• Top-Loading Bullet Window: Features a convenient side-entry / top-load window. Reloaders can drop the bullet directly into the window, where an internal sleeve aligns it perfectly with the case neck as it enters the die, eliminating the need to balance bullets manually on the case mouth.
• No Sizing Bushings Required: The "Duo" design utilizes a standard, non-bushing full-length sizing die. This simplifies the resizing process by sizing the entire body back to factory dimensions without requiring the user to calculate neck wall thickness or swap out separate neck bushings.
• Purely Mechanical Operation: As a fully manual reloading tool, this set requires no electrical power, making it fully compatible with any Australian workshop setup without regulatory electrical compliance concerns.

Product Specifications

• Calibre Compatibility: 7mm Precision Rifle Cartridge (7mm PRC)
• Model Number: R28104 (RCBS SKU 28104)
• Thread Pitch: Standard 7/8"-14
• Adjustment Increments: 0.001"
• Physical Dimensions: 5.90" L x 4.60" W x 1.90" H (approx. 15.0 cm x 11.7 cm x 4.8 cm)
• Weight: 1.34 lbs to 1.41 lbs (approx. 610 to 640 grams)
• Shellholder Requirement: Requires standard RCBS Shellholder #38 (sold separately)

Who is the Rcbs 7mm Prc Matchmaster Duo Die Set for?

• Competitive precision rifle shooters — who require ultra-precise bullet seating depth adjustments can use the 0.001" micrometer increments of this 7mm PRC reloading die set to achieve highly consistent cartridge overall length and peak downrange accuracy.
• Match-grade handloaders — who want to simplify case preparation can utilize this standard full-length sizing and seating die set weighing 1.34 lbs to 1.41 lbs to size the entire cartridge body back to factory dimensions without needing separate neck bushings.

Less suitable for: Precision shooters who demand absolute control over neck tension to match tight-tolerance custom chambers, who should instead choose a full-length bushing die set, or those who require integrated crimping functionality, which requires a separate crimping die.