Lyman 7690100 MSR Precision Die System .223 Remington Reloading Dies

The Lyman 7690100 MSR Precision Die System delivers match-grade ammunition consistency for .223 Remington cartridges. This three-die system addresses the unique requirements of modern sporting rifles with enhanced case preparation and precision sizing capabilities that standard dies cannot match.

What Makes This Different

Unlike conventional two-die sets, the MSR Precision system includes a dedicated taper crimp die that maintains proper bullet tension without case mouth deformation. The full-length sizing die features a carbide expander ball that reduces case neck stress during resizing operations. This system produces ammunition with consistent overall length and optimal chamber fit for semi-automatic platforms.

Key Features

• Three-die system: full-length sizing die, bullet seating die, and taper crimp die
• Carbide expander ball reduces case neck tension variations
• Taper crimp die maintains bullet retention without case mouth distortion
• Precision-machined steel construction with heat-treated components
• Compatible with all standard 7/8-14 thread reloading presses
• Includes detailed reloading data and setup instructions
• Shellholder #2 required for proper case holding (sold separately)

This die system excels in high-volume reloading scenarios where ammunition consistency directly impacts accuracy. Competition shooters benefit from the uniform cartridge overall length and consistent bullet seating depth. The taper crimp die ensures reliable feeding in semi-automatic actions while maintaining proper case life through multiple reloading cycles.

Technical Specs

• Caliber: .223 Remington/5.56x45mm NATO
• Thread specification: 7/8-14 TPI standard
• Die body material: Heat-treated alloy steel
• Expander ball: Carbide construction
• Includes: Sizing die, seating die, taper crimp die, hex wrenches
• Compatible with: All standard single-stage and progressive presses
• Country of origin: United States
• Manufacturer part number: 7690100

The MSR Precision Die System represents the next evolution in .223 Remington reloading technology. Serious reloaders who demand consistent performance from their ammunition will find this three-die system addresses the specific challenges of loading for modern sporting rifles.