Winchester WSC3840U 38-40 Win Unprimed Brass Cases - 50/Bag

The Winchester WSC3840U delivers precision-manufactured unprimed brass cases for the classic 38-40 Winchester cartridge. These cases provide handloaders with consistent wall thickness and proper headspace dimensions for reliable performance in vintage rifles and modern reproductions.

What Makes This Different

Winchester produces these cases using their proprietary brass alloy that maintains optimal hardness throughout multiple reloading cycles. The cases feature uniform neck tension and consistent flash hole diameter, ensuring reliable primer seating and ignition. Unlike generic brass, Winchester cases undergo rigorous quality control testing to meet SAAMI specifications for chamber pressure and dimensional tolerances.

Key Features

• Precision-drawn brass construction with consistent wall thickness
• SAAMI-spec dimensions for reliable chambering in 38-40 Winchester firearms
• Unprimed cases ready for custom load development
• Uniform flash holes for consistent ignition timing
• Annealed case mouths for proper bullet seating tension
• 50-count packaging for efficient inventory management
• Compatible with standard large rifle primers

These cases excel in both target shooting and hunting applications where accuracy demands consistent ammunition performance. The 38-40 Winchester cartridge delivers effective terminal ballistics on medium game while maintaining manageable recoil in lever-action rifles. Winchester's manufacturing process ensures each case meets the dimensional requirements for safe maximum loads, whether using cast lead bullets or jacketed projectiles.

Technical Specs

• Caliber: 38-40 Winchester (38 WCF)
• Case type: Bottlenecked rifle cartridge
• Material: High-quality brass alloy
• Primer pocket: Large rifle primer
• Case length: 1.305 inches
• Rim diameter: 0.525 inches
• Package quantity: 50 unprimed cases
• Manufacturer: Winchester Ammunition

Winchester's reputation for ammunition quality extends to their component brass, making these cases the logical choice for serious handloaders. The consistent performance characteristics reduce load development time while providing the reliability needed for both competition and field use.