Winchester WSC338LU Unprimed Brass Cases 338 Lapua Magnum 20/Bag

Winchester WSC338LU unprimed brass cases deliver the foundation precision shooters demand for 338 Lapua Magnum loads. These cases provide consistent wall thickness and dimensional uniformity that translates directly to improved accuracy and reliable chambering across multiple reloading cycles.

What Makes This Different

Winchester brass cases undergo multi-stage annealing processes that optimize case neck tension and body hardness for extended case life. The manufacturing process maintains tighter tolerances than military surplus brass, with flash holes deburred and primer pockets uniformly cut to 0.210 inches. Each case receives final inspection for concentricity and dimensional compliance before packaging.

Key Features

• Premium brass construction with consistent wall thickness for uniform powder burn
• Annealed case necks provide optimal bullet tension and release characteristics
• Large rifle primer pockets cut to precise 0.210-inch diameter
• Flash holes deburred and centered for consistent ignition
• 20 cases per bag with protective packaging to prevent damage
• Compatible with all standard 338 Lapua Magnum chamber specifications
• Reloadable multiple times with proper sizing and annealing maintenance

These cases perform consistently across temperature extremes and high-pressure loads typical of long-range precision applications. The 338 Lapua Magnum cartridge excels in competitive precision rifle matches and extreme long-range hunting scenarios where first-round accuracy matters. Winchester brass maintains structural integrity under the significant chamber pressures this cartridge generates, typically exceeding 60,000 PSI in full-power loads.

Technical Specs

• Caliber: 338 Lapua Magnum
• Case type: Unprimed rifle brass
• Quantity: 20 cases per bag
• Primer pocket: Large rifle (0.210 inches)
• Case length: 2.724 inches
• Base diameter: 0.588 inches
• Material: High-quality brass alloy
• Manufacturing: United States

Reloaders working with precision rifle platforms benefit from the dimensional consistency Winchester maintains across production lots. These cases form the foundation for developing accurate handloads that maximize the 338 Lapua Magnum's exceptional ballistic potential at extended ranges.