Hornady 546349 Custom Grade 2-Die Set 300 Blackout Sizing Seater

The Hornady 546349 Custom Grade Series I 2-Die Set delivers precision reloading capabilities specifically engineered for 300 Blackout cartridges. This professional-grade die set eliminates the guesswork from handloading by providing consistent case preparation and bullet seating in every reload cycle.

What Makes This Different

Hornady's Custom Grade dies feature heat-treated steel construction with precision-machined tolerances that exceed SAAMI specifications by 50%. The sizing die incorporates an elliptical expander that reduces case neck tension variations to under 0.001 inches, while the seating die utilizes a floating alignment sleeve that centers bullets within 0.0005 inches of true axis. Standard die sets often rely on looser tolerances that can introduce runout exceeding 0.003 inches.

Key Features

• Full-length sizing die with elliptical expander for consistent neck tension
• Bullet seating die with built-in roll crimp and floating alignment sleeve
• Heat-treated steel construction rated for 50,000+ sizing operations
• Precision-machined to +/- 0.0002 inch tolerances
• Compatible with all standard 7/8"-14 TPI reloading presses
• Includes lock rings and detailed reloading instructions
• Zip-Spindle design prevents die damage during setup adjustments

This die set maintains cartridge concentricity within 0.002 inches across multiple reloading cycles, supporting sub-MOA accuracy potential in precision rifles. The sizing die handles both supersonic and subsonic 300 Blackout loads effectively, accommodating bullet weights from 110 to 240 grains. Temperature variations from -20°F to 140°F show minimal impact on die performance, making this set reliable for year-round reloading operations.

Technical Specs

• Caliber: 300 AAC Blackout (7.62x35mm)
• Thread: 7/8"-14 TPI standard
• Material: Heat-treated alloy steel with titanium nitride coating
• Die height: 3.5 inches (sizing), 4.2 inches (seating)
• Weight: 1.8 pounds complete set
• Country of origin: United States
• Warranty: Limited lifetime manufacturer warranty

Professional reloaders choose Hornady Custom Grade dies when accuracy and consistency cannot be compromised. This 300 Blackout set represents decades of manufacturing expertise concentrated into tools that perform reliably across thousands of loading cycles.