Starline Brass 10mm Auto Unprimed Cases - 100 Count Bag

The Starline Brass 10EUP100 delivers consistent case dimensions and reliable primer pocket uniformity for precision 10mm Auto reloading. These unprimed brass cases feature Starline's proprietary manufacturing process that produces cases with minimal wall thickness variation and exceptional concentricity.

What Makes This Different

Starline brass cases undergo a specialized annealing process that creates uniform hardness throughout the case body while maintaining optimal neck tension. The company's quality control standards reject cases with dimensional variations exceeding 0.001 inches, compared to industry standards of 0.003 inches. This precision manufacturing results in more consistent powder charges and improved accuracy potential.

Key Features

• 100 unprimed 10mm Auto brass cases per bag
• Uniform wall thickness within 0.001 inches for consistent capacity
• Flash holes deburred and primer pockets reamed to specification
• Annealed case necks provide consistent bullet seating tension
• Compatible with all standard 10mm Auto loading data
• Small rifle primer pocket configuration
• Headstamp clearly marked for easy identification

These cases perform reliably across multiple reloading cycles when properly maintained. The 10mm Auto cartridge generates chamber pressures up to 37,500 PSI, requiring brass that maintains structural integrity under repeated firing and resizing operations. Starline's heat treatment process creates cases that resist case head separation and maintain primer pocket tightness through extended use cycles.

Technical Specs

• Caliber: 10mm Auto
• Case length: 0.992 inches
• Primer type: Small rifle primer
• Material: 70/30 brass alloy
• Quantity: 100 cases per bag
• Condition: New, unprimed
• Manufacturer: Starline Brass, USA
• Weight: Approximately 3.2 pounds per 100 cases

Starline maintains tighter manufacturing tolerances than military surplus brass, resulting in more predictable ballistic performance and extended case life. These cases arrive ready for powder, bullet, and primer installation without additional preparation steps.