Hornady 546449 Custom Grade Series IV Die Set 375 Flanged Mag

The Hornady 546449 Custom Grade Series IV 2-Die Set delivers precision reloading capabilities for the powerful 375 Flanged Magnum Nitro Express cartridge. This professional-grade die set combines advanced manufacturing techniques with hardened steel construction to produce consistent, accurate ammunition for dangerous game hunting and long-range shooting applications.

What Makes This Different

Hornady's Custom Grade Series IV dies feature tighter manufacturing tolerances than standard reloading dies, ensuring consistent case dimensions and improved accuracy. The dies incorporate Hornady's Sure-Loc lock rings and Zip Spindle design for precise adjustments that stay locked during extended reloading sessions. Each die undergoes individual inspection and testing before packaging, guaranteeing dimensional accuracy within 0.0005 inches.

Key Features

• Full-length sizing die with expander ball for consistent case preparation
• Bullet seating die with built-in roll crimp for secure bullet retention
• Heat-treated steel construction rated for over 10,000 reloading cycles
• Sure-Loc lock rings prevent die movement during operation
• Zip Spindle design allows quick die height adjustments
• Compatible with all standard 7/8"-14 TPI reloading presses
• Includes detailed reloading instructions and load data references

The 375 Flanged Magnum Nitro Express cartridge demands precision reloading due to its high chamber pressures and critical headspace requirements. This die set handles the cartridge's unique flanged rim design while maintaining proper case shoulder angles essential for reliable feeding and extraction. The sizing die removes firing pin impressions and restores cases to SAAMI specifications, while the seating die positions bullets with repeatable concentricity for optimal accuracy.

Technical Specs

• Caliber: 375 Flanged Magnum Nitro Express
• Thread specification: 7/8"-14 TPI standard
• Die body material: Heat-treated alloy steel
• Surface finish: Rust-resistant black oxide coating
• Die set includes: Full-length sizing die, bullet seating die
• Lock ring type: Sure-Loc with set screw retention
• Manufacturing origin: Grand Island, Nebraska, USA
• Warranty: Limited lifetime manufacturer warranty

This Custom Grade die set represents the precision tooling required for dangerous game cartridges where ammunition reliability cannot be compromised. The 375 Flanged Magnum's reputation for stopping power depends on consistent case preparation and bullet seating depth, making professional-grade reloading dies an essential investment for serious hunters and precision shooters.