Hornady Lock-N-Load 300 PRC Modified Case

• Calibre-specific modified case for 300 PRC (Precision Rifle Cartridge)
• Designed for use with the Hornady Lock-N-Load O.A.L. Gauge system
• Drilled and tapped base accepts the gauge's bullet comparator insert
• Measures cartridge overall length to the rifling lands in your specific chamber
• Manufactured to SAAMI specifications for the 300 PRC
• No primer or powder required — safe, repeatable seating-depth reference

The Hornady Lock-N-Load Modified Case for 300 PRC is a calibre-specific reloading accessory designed for use with the Hornady Lock-N-Load O.A.L. Gauge. Made to SAAMI specifications for the 300 Precision Rifle Cartridge chamber, the case is drilled and tapped at the base to accept the O.A.L. Gauge's interchangeable bullet comparator insert. The system lets a handloader determine the exact cartridge overall length at which a particular bullet touches the rifling lands in their own rifle — information that is essential for developing accurate, pressure-safe loads in this long-range calibre. Because every rifle barrel has a slightly different throat dimension, measuring from your own chamber rather than from published data gives a more accurate seating-depth baseline. No primer, powder or firing is involved; the modified case simply chambers and is withdrawn with the bullet held at the lands, allowing the gauge to read the true COAL. A sound investment for any serious 300 PRC handloader looking to dial in bullet seating depth precisely.

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