Federal Large Magnum Pistol Match Primers – Gold Medal No. GM155M

Federal Large Magnum Pistol Match Primers – Gold Medal No. GM155M

Overview

The Federal Gold Medal GM155M Large Magnum Pistol Match Primers are engineered for maximum consistency and precision, specifically tailored for magnum pistol loads where uniform ignition is critical. These primers are part of Federal’s Gold Medal® Match series, which represents the highest level of primer quality offered by the manufacturer. They are designed with tighter tolerances and stricter quality control standards than standard primers, making them the top choice for competitive shooters, precision handloaders, and serious reloaders seeking peak performance.

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Key Features

• 🔥 Hot Magnum Ignition: Optimized for magnum handgun cartridges and slower-burning powders.

• 🎯 Match-Grade Consistency: Built to stricter specifications for weight, dimensions, and sensitivity.

• ✅ Enhanced Sensitivity: Engineered for reliable ignition under all conditions, including cold weather and high-pressure loads.

• 🧪 Clean Ignition: Formulated for reduced fouling in primer pockets, contributing to extended reloading life.

• 🏆 Gold Medal Series Quality: Manufactured with Federal’s highest quality assurance for competitive and precision shooting applications.

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Specifications

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Recommended Applications

Federal GM155M primers are best suited for:

• High-performance magnum pistol cartridges, such as:

  • .44 Magnum

  • .454 Casull

  • .500 S&W Magnum

  • .45 Winchester Magnum

• Handloads with large powder volumes or slow-burning propellants (e.g., H110, W296, 2400)

• Cold-weather shooting, where consistent ignition is harder to achieve

• Precision shooting, where shot-to-shot reliability and accuracy are crucial

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Reloading Tips

• 📘 Use Proper Load Data: Always refer to current, published reloading manuals from reputable sources (e.g., Hornady, Hodgdon, Lyman).

• ⚠️ Do Not Substitute: Never substitute magnum primers for standard primers unless explicitly stated in your load data. Doing so can create dangerously high pressures.

• 🔩 Proper Seating Depth: Seat primers flush or slightly below flush to ensure reliable ignition and safety.

• ⚙️ Watch for Pressure Signs: As magnum primers are hotter, watch for flattened primers or other pressure indicators, especially when working near max loads.

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Storage & Safety

• Store in a cool, dry environment away from heat, flame, or static electricity.

• Keep primers in their original packaging and separate from powder.

• Follow all federal, state, and local regulations for storage and handling of primers.

🛡️ Always wear eye protection when seating primers, and keep all components away from children and unauthorized users.

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Why Choose Federal GM155M?

If you’re looking for match-grade consistency in high-powered, magnum pistol loads, Federal Gold Medal GM155M primers are your answer. Trusted by elite competitive shooters and precision handloaders, these primers deliver the perfect blend of power, reliability, and accuracy for demanding applications.