Winchester WSC270WSMU Unprimed Brass Cases 270 WSM 50/Bag

Winchester WSC270WSMU unprimed brass cases deliver the precision foundation serious 270 Winchester Short Magnum reloaders demand. These factory-fresh cases provide consistent wall thickness and proper headspace dimensions for maximum accuracy potential. Each case meets Winchester's exacting manufacturing standards used in their premium factory ammunition.

What Makes This Different

Winchester brass cases feature uniform wall thickness achieved through their proprietary drawing process, resulting in more consistent powder capacity than many competitor offerings. The brass alloy composition provides optimal hardness for multiple reloading cycles while maintaining primer pocket integrity. These cases typically deliver 8-12 reloading cycles with proper sizing and annealing practices, compared to 5-8 cycles from softer brass alternatives.

Key Features

• Premium brass alloy construction for extended case life and consistent performance
• Uniform wall thickness ensures reliable powder charges and velocity consistency
• Proper headspace dimensions eliminate chambering issues in SAAMI-spec rifles
• Large rifle primer pockets sized to 0.210" diameter specification
• Flash holes deburred and sized to 0.080" for consistent ignition
• Factory-fresh condition requires no cleaning or preparation before loading
• 50-case count provides sufficient quantity for load development and hunting seasons

The 270 WSM cartridge generates significant chamber pressures up to 65,000 PSI, making case quality critical for safety and performance. Winchester brass maintains structural integrity under these pressures while providing the neck tension necessary for consistent bullet release. Competition shooters report velocity standard deviations under 15 fps when using quality components with these cases. The short magnum case design fits standard long-action rifles while delivering magnum performance with less powder than traditional belted magnums.

Technical Specs

• Caliber: 270 Winchester Short Magnum (270 WSM)
• Case length: 2.100 inches
• Base diameter: 0.555 inches
• Neck diameter: 0.308 inches
• Primer pocket: Large rifle (0.210" diameter)
• Flash hole diameter: 0.080 inches
• Material: Premium brass alloy
• Condition: Unprimed, ready to load
• Package quantity: 50 cases per bag
• Country of origin: United States

Winchester's century-plus manufacturing experience shows in the consistent dimensions and quality control of these cases. Reloaders seeking maximum accuracy potential from their 270 WSM rifles will find these cases provide the foundation needed for precision handloads.