Weatherby BRASS333 338-378 Weatherby Mag Unprimed Brass Cases 20/Box

The Weatherby BRASS333 delivers premium unprimed brass cases specifically engineered for the high-velocity 338-378 Weatherby Magnum cartridge. These cases provide the foundation for precision handloads that maximize the potential of this powerful magnum caliber. Manufactured to Weatherby's exacting standards, each case undergoes quality control processes that ensure consistent wall thickness and proper headspace dimensions.

What Makes This Different

Weatherby brass cases feature thicker case walls and reinforced web construction compared to standard rifle brass, essential for handling the extreme pressures generated by the 338-378 Weatherby Magnum. The brass alloy composition provides optimal expansion characteristics while maintaining structural integrity through multiple reload cycles. Each case is manufactured with precise flash hole diameter and primer pocket depth for consistent ignition.

Key Features

• Premium brass construction rated for multiple reloading cycles
• Reinforced case head design handles 65,000+ PSI chamber pressures
• Consistent case wall thickness within ±0.001 inch tolerance
• Factory-specified headspace dimensions for proper chamber fit
• Uniform flash hole diameter ensures reliable primer ignition
• 20 cases per box for efficient handloading quantities
• Compatible with standard large rifle primers

These cases excel in long-range hunting applications where the 338-378 Weatherby Magnum's exceptional ballistics shine. The robust construction withstands the cartridge's high operating pressures while delivering the case life handloaders expect from premium components. Weather resistance and dimensional stability make these cases suitable for extreme hunting conditions from Alaska to Africa.

Technical Specs

• Caliber: 338-378 Weatherby Magnum
• Case length: 2.913 inches
• Material: Premium brass alloy
• Primer type: Large rifle
• Case capacity: Approximately 114 grains H2O
• Quantity: 20 cases per box
• Condition: Unprimed, ready for handloading
• Manufacturer: Weatherby Inc.

Handloaders seeking maximum performance from the 338-378 Weatherby Magnum require cases that match the cartridge's demanding specifications. This brass provides the reliability and consistency needed for developing precision loads that extract every bit of potential from this powerful magnum cartridge.