Federal GM155M Gold Medal Large Pistol Primers 1000/Box 5-Case

The Federal GM155M Gold Medal Premium Large Pistol Primers deliver match-grade consistency for precision handgun reloading across multiple calibers. These primers feature Federal's proprietary priming compound formulation that ensures reliable ignition and consistent velocities shot after shot. Competition shooters and precision reloaders choose Gold Medal primers for their proven track record in high-stakes matches.

What Makes This Different

Gold Medal primers undergo additional quality control steps compared to standard primers, including individual primer sensitivity testing and lot-to-lot consistency verification. The advanced priming compound burns cleaner and more completely than conventional formulations, reducing fouling buildup in precision barrels. Federal's manufacturing process maintains tighter tolerances on cup dimensions and anvil positioning, resulting in more uniform ignition timing across the entire lot.

Key Features

• Match-grade priming compound for consistent ignition timing and velocity
• Large pistol size fits .40 S&W, .45 ACP, 10mm Auto, and other large primer cartridges
• Individual primer sensitivity testing ensures reliable performance
• Clean-burning formulation reduces barrel fouling and residue buildup
• Precision-manufactured cups with tight dimensional tolerances
• 5-case bulk packaging (5,000 total primers) for high-volume reloaders
• Compatible with progressive and single-stage reloading presses

These primers excel in competitive shooting environments where consistent accuracy matters most. The uniform ignition characteristics help maintain tight groups in precision pistol disciplines like Bullseye and NRA Action Pistol. Law enforcement agencies and serious recreational shooters appreciate the reliability factor when loading duty ammunition or match loads for critical applications.

Technical Specs

• Primer Size: Large Pistol
• Quantity: 1,000 primers per box, 5 boxes per case (5,000 total)
• Compatible Calibers: .40 S&W, .45 ACP, 10mm Auto, .44 Magnum, .45 Colt
• Cup Material: Gilding metal with brass anvil
• Sensitivity: Standard large pistol specifications
• Storage Temperature: -40°F to +150°F
• Manufacturer: Federal Premium Ammunition
• Country of Origin: United States

Federal's Gold Medal line represents the pinnacle of primer technology for serious handgun reloaders who demand competition-level consistency. The bulk 5-case format provides excellent value for high-volume shooters while maintaining the quality standards that have made Federal primers the choice of Olympic champions and national record holders.