Lyman 7690110 MSR Precision Die System 458 SOCOM Bushmaster

The Lyman 7690110 MSR Precision Die System delivers match-grade reloading precision specifically engineered for 458 SOCOM cartridges in AR-15 platform rifles. This specialized die set addresses the unique challenges of loading large-bore straight-wall cartridges in modern sporting rifles, ensuring consistent chambering and optimal accuracy.

What Makes This Different

Unlike standard rifle dies that can struggle with the 458 SOCOM's straight-wall design and large case mouth, this MSR system incorporates Lyman's precision-ground hardened steel construction with tighter tolerances. The dies feature enhanced case mouth expansion control and improved bullet seating consistency compared to conventional die sets. Each die undergoes individual testing to maintain concentricity within 0.002 inches.

Key Features

• Full-length sizing die with hardened steel construction for consistent case preparation
• Micrometer-adjustable bullet seating die for precise depth control
• Taper crimp die specifically designed for straight-wall cartridge geometry
• Compatible with standard 7/8-14 thread reloading presses
• Includes detailed loading data and setup instructions
• Precision-ground surfaces maintain case concentricity within 0.002 inches
• Heat-treated steel construction rated for thousands of loading cycles

This die system excels in applications requiring consistent ammunition performance, from precision shooting competitions to hunting large game where terminal ballistics matter. The 458 SOCOM's substantial bullet weight and energy transfer make consistent loading critical for both accuracy and safety. Weather-resistant finish protects the dies during storage in varying humidity conditions.

Technical Specs

• Caliber: 458 SOCOM
• Thread: 7/8-14 TPI (standard reloading press)
• Material: Hardened tool steel with corrosion-resistant finish
• Includes: Full-length sizing die, bullet seating die, taper crimp die
• Concentricity tolerance: 0.002 inches maximum
• Compatible with: Single-stage and progressive reloading presses
• Manufacturer: Lyman Products Corporation
• Model: 7690110

Reloaders seeking maximum accuracy from their 458 SOCOM rifles will find this die system provides the precision control necessary for consistent ammunition performance. The specialized design eliminates common loading issues while maintaining the durability expected from professional-grade reloading equipment.