Lyman MSR Precision Die System 4-Die Set 50 Beowulf 7690112

The Lyman 7690112 MSR Precision Die System delivers match-grade reloading precision specifically engineered for the demanding 50 Beowulf cartridge. This comprehensive 4-die set addresses the unique challenges of loading large-bore AR platform rounds with consistent accuracy and reliability.

What Makes This Different

Unlike standard die sets, the MSR Precision system incorporates a dedicated taper crimp die and competition-grade sizing tolerances optimized for semi-automatic feeding. The hardened steel construction maintains dimensional stability under the extreme pressures generated by 50 Beowulf loads. Each die features precision-ground surfaces and hand-polished interiors that reduce case work hardening while extending brass life up to 40% compared to conventional dies.

Key Features

• Four-die configuration includes full-length sizing, neck expanding, bullet seating, and taper crimp dies
• Hardened tool steel construction with titanium nitride coating for extended wear resistance
• Precision-ground 7/8-14 threads compatible with all standard reloading presses
• Micrometer-adjustable seating die with floating bullet guide for consistent OAL
• Taper crimp die ensures reliable feeding in AR-15 platform rifles
• Includes detailed loading manual with powder recommendations and safety data
• Lockring system prevents die movement during high-volume loading sessions

The system handles bullets from 300 to 500 grains with repeatable seating depth control within 0.001 inches. Competition shooters report improved ES/SD numbers when switching from generic dies, while hunters appreciate the consistent terminal performance achieved through uniform bullet seating. The taper crimp die eliminates feeding issues common with straight-wall crimps in semi-automatic actions, particularly important given the 50 Beowulf's substantial case dimensions.

Technical Specs

• Caliber: 50 Beowulf (.500 diameter)
• Thread specification: 7/8-14 TPI standard
• Die material: Heat-treated tool steel with TiN coating
• Compatible with: RCBS, Hornady, Lee, Lyman, and Redding presses
• Includes: Sizing die, expanding die, seating die, taper crimp die
• Case length capacity: 1.65 inches maximum
• Manufactured in: United States
• Warranty: Limited lifetime manufacturer warranty

This die set represents the precision tooling required for consistent 50 Beowulf ammunition production. The engineering focus on semi-automatic reliability combined with match-grade accuracy makes it essential equipment for serious large-bore AR enthusiasts.