The Hornady Custom-Grade Series I Bullet Seater Die (.300 PRC) is an individual mechanical reloading die engineered specifically for assembling and seating .308-inch (7.82 mm) diameter projectiles into the .300 Precision Rifle Cartridge (.300 PRC). Machined from heat-treated steel with a polished internal bore, this tool features an in-line alignment sleeve that captures and aligns the bullet and case neck before the projectile enters the case mouth, directly reducing concentricity errors and cartridge overall length (COAL) variance. Designed for standard mechanical presses, it operates without electrical power and mounts using the industry-standard 7/8"-14 thread interface.

Key Features

• In-Line Bullet Alignment: Employs a floating, internal alignment sleeve that holds the projectile straight with the case neck prior to seating, minimising bullet runout.
• Built-In Roll Crimp Capability: Internal geometry allows reloaders to apply a roll crimp by adjusting the die body downward, or back it off to seat bullets without crimping.
• Universal Press Compatibility: Standard 7/8"-14 threading integrates with common single-stage and progressive handloading presses.
• Sure-Loc Ring Retention: Compatible with split-ring clamping locks to secure depth settings without stripping or damaging the steel die threads.
• All-Steel Construction: Precision-machined and heat-treated steel structure maintains internal dimensions across high-volume handloading cycles.

Product Specifications

• Product Type: Rifle bullet seating die
• Manufacturer SKU: 044157
• Calibre: .300 Precision Rifle Cartridge (.300 PRC)
• Bullet Diameter Compatibility: .308 in (7.82 mm)
• Thread Interface: Standard 7/8"-14 threads
• Material: Heat-treated, polished steel
• Packaged Weight: Approximately 0.25 kg to 0.35 kg
• Operating Mechanism: Manual / mechanical reloading press

Who is the Hornady 300 Prc Seating Die for?

• Handloaders assembling precision .300 PRC rifle ammunition — mounts via industry-standard 7/8"-14 threads to guide .308 in (7.82 mm) projectiles through a sliding alignment sleeve, ensuring precise, repeatable bullet-to-case concentricity on standard reloading presses.
• Long-range competitive shooters and hunters — controls projectile seating depth and uniform cartridge overall length for the .300 PRC bottleneck cartridge, delivering the dimensional consistency required for extended-distance target engagement.

Less suitable for: Handloaders assembling alternative .30-caliber magnums like the .300 Winchester Magnum, .300 WSM, or .300 Weatherby Magnum due to incompatible case taper and shoulder dimensions; these setups require dedicated caliber-specific seating dies. Additionally, users loading ultra-long-ogive, high-BC projectiles require specialized seating stems to prevent bullet tip deformation, while reloaders demanding repeatable 0.001-inch depth changes require a micrometer-adjustable seating die.