Starline Brass 243 Winchester Unprimed Cases - 50 Count Bag

The Starline Brass 243WINEUP50 delivers consistent case dimensions and uniform wall thickness for precision reloading applications. Professional reloaders and competitive shooters rely on Starline's manufacturing standards to achieve repeatable accuracy with their 243 Winchester loads.

What Makes This Different

Starline brass cases undergo a multi-stage annealing process that maintains optimal neck tension and prevents case mouth splitting during repeated reloading cycles. Unlike mass-produced alternatives, each case receives individual quality inspection for dimensional consistency. The proprietary brass alloy composition provides superior case life, typically lasting 8-12 reloading cycles with proper sizing techniques.

Key Features

• Premium brass alloy construction with uniform wall thickness tolerance of ±0.0015 inches
• Unprimed cases ready for custom primer and powder combinations
• Consistent case capacity within 0.5 grains for load development accuracy
• Proper headspace dimensions ensure reliable chambering in SAAMI-spec rifles
• Annealed case necks maintain consistent bullet seating depth
• Flash hole diameter held to 0.080 inches ±0.002 for uniform ignition
• 50-count packaging with protective foam inserts prevents case damage

These cases perform consistently across temperature ranges from -20°F to 140°F without dimensional changes that affect accuracy. Match shooters appreciate the uniform primer pocket depth that ensures consistent ignition timing. The cases accept both large rifle primers and magnum primers depending on powder selection. Hunters benefit from the reliable extraction characteristics even with maximum pressure loads in adverse weather conditions.

Technical Specs

• Caliber: 243 Winchester
• Case length: 2.045 inches nominal
• Base diameter: 0.470 inches
• Neck diameter: 0.276 inches
• Primer pocket: Large rifle (0.210 inches)
• Flash hole diameter: 0.080 inches
• Material: Premium brass alloy
• Quantity: 50 cases per bag
• Country of origin: United States
• Condition: New, unprimed

Starline's reputation for dimensional consistency makes these cases the foundation for precision handloads that deliver sub-MOA accuracy. The 50-count packaging provides sufficient quantity for load development while maintaining cost efficiency for serious reloaders.