Winchester WSC7MMAU Unprimed Brass Cases 7mm Mauser 50/Bag

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Description

The Winchester WSC7MMAU delivers precision-manufactured unprimed brass cases specifically engineered for 7mm Mauser cartridge reloading. These cases provide reloaders with consistent wall thickness and optimal primer pocket dimensions for reliable ignition and accuracy.

What Makes This Different

Winchester brass cases undergo rigorous quality control processes that ensure uniform case capacity and concentricity within 0.002 inches. The brass alloy composition provides superior work-hardening characteristics compared to standard military surplus cases. Each case features precise flash hole diameter and consistent neck tension for optimal powder burn rates.

Key Features

Precision-drawn brass construction with uniform wall thickness
Consistent case capacity within 0.5 grains for accurate powder charges
Properly sized primer pockets accept large rifle primers
Annealed necks prevent cracking during multiple reloading cycles
Flash holes deburred and sized to 0.080 inches for consistent ignition
Compatible with all standard 7mm Mauser chamber specifications
Packaged in protective 50-count bags to prevent damage

These cases perform consistently across temperature ranges from -20°F to 125°F without dimensional changes. The brass composition maintains structural integrity through multiple firing and resizing cycles, typically lasting 8-12 reloads with proper preparation. Competition shooters rely on Winchester brass for match-grade ammunition requiring sub-MOA accuracy at extended ranges.

Technical Specs

Caliber: 7mm Mauser (7x57mm)
Case length: 2.235 inches
Rim diameter: 0.473 inches
Base diameter: 0.470 inches
Neck diameter: 0.318 inches
Primer type: Large rifle
Material: 70/30 brass alloy
Quantity: 50 cases per bag
Country of origin: United States

Winchester's century of ammunition manufacturing experience ensures these cases meet SAAMI specifications for dimensional accuracy and metallurgical properties. Each lot undergoes pressure testing to verify safe operating parameters, making these cases suitable for both hunting loads and precision target ammunition.