Weatherby 30-378 Weatherby Magnum Unprimed Brass Cases 20/Box

The Weatherby BRASS303 unprimed brass cases deliver the foundation for precision handloading in the powerful 30-378 Weatherby Magnum cartridge. These factory-spec cases provide handloaders with consistent wall thickness and proper headspace dimensions for maximum accuracy potential.

What Makes This Different

Weatherby brass cases are manufactured to tighter tolerances than many commercial alternatives, with uniform wall thickness that promotes consistent powder burn and bullet release. The 30-378 Weatherby Magnum requires premium brass construction to handle chamber pressures exceeding 65,000 PSI safely. Each case undergoes quality inspection to ensure proper neck tension and case mouth uniformity before packaging.

Key Features

• Premium brass construction rated for multiple reloading cycles
• Consistent wall thickness within 0.002 inches for uniform performance
• Factory headspace dimensions match Weatherby chamber specifications
• Unprimed cases ready for custom load development
• 20-count packaging reduces waste for serious handloaders
• Compatible with standard large rifle primers
• Boxer primer pockets for easy decapping and repriming

These cases excel in long-range hunting applications where the 30-378 Weatherby Magnum's velocity advantage matters most. The cartridge pushes 180-grain bullets past 3,200 fps and 200-grain projectiles beyond 3,000 fps when properly loaded. Case life typically extends 8-12 reloading cycles with moderate pressure loads, making them cost-effective for volume shooters.

Technical Specs

• Caliber: 30-378 Weatherby Magnum
• Case material: Premium brass alloy
• Primer type: Large rifle (not included)
• Case capacity: Approximately 114 grains H2O
• Overall length: 3.180 inches
• Rim diameter: 0.579 inches
• Package quantity: 20 cases
• Condition: Unprimed, ready to load

Handloaders seeking maximum performance from their 30-378 Weatherby Magnum rifles need brass cases that match the cartridge's demanding specifications. These Weatherby factory cases eliminate the guesswork in case preparation and provide the consistency required for sub-MOA accuracy potential.