The Federal American Eagle 5.56x45mm NATO 55-grain Full Metal Jacket Boat-Tail (FMJ-BT) 100-round value pack is a premium centerfire rifle cartridge optimized for high-volume tactical training, competitive matches, and general range use. A common friction point when running standard commercial .223 Remington ammunition through modern carbines is inconsistent gas system cycling, particularly in rifles equipped with heavier buffers or tighter chamber tolerances. Federal completely resolves this platform limitation by loading this series to true, full-power 5.56x45mm NATO pressure levels. This guarantees robust bolt carrier group velocity, lightning-fast extraction, and a highly repeatable recoil impulse round after round.
The technical advantage focuses on matching the iconic M193 military pressure curve while utilizing an exceptionally stable projectile design. The 55-grain bullet features a traditional boat-tail rear geometry that significantly slashes base drag, stabilizing the projectile's flight path and preserving downrange velocity. To withstand the violent feeding cycles of hard-running semi-automatic platforms, the copper jacket incorporates a deep mechanical cannelure. This crisp crimping ring locks the bullet securely in place, preventing accuracy-destroying bullet setback as the cartridge slams up steep feed ramps and into the chamber.
Launching its training payload at a blistering muzzle velocity of 3,165 FPS, this 5.56 NATO load delivers a remarkably flat trajectory and consistent gas-system timing for rapid follow-up shots. Built to meet rigorous military-grade benchmarks, each cartridge is housed in a high-quality brass case featuring properly annealed necks and shoulders. This specialized heat-treatment process increases structural elasticity under intense pressures, ensuring slick mechanical extraction from hot chambers while significantly extending the reload life of the brass for high-volume handloaders.
Key Benefits
- True 5.56 NATO Pressures: Loaded to full military specification to ensure maximum gas backpressure and reliable cycling in firearms with heavy buffer systems.
- Aerodynamic Boat-Tail Profile: Streamlined rear base minimizes air drag downrange, preserving velocity and flattening your target trajectory.
- Anti-Setback Cannelure Ring: Deep mechanical jacket crimp keeps the bullet perfectly seated during rapid, aggressive semi-automatic feeding strings.
- Annealed Brass Cases: Premium heat-treated brass casings resist split necks, guarantee smooth extraction, and support multiple reloading cycles.
Technical Specification
- Ballistics: 5.56x45mm NATO | 3,165 FPS Muzzle Velocity | M193-Equivalent Duty Pressure Curve | High-Velocity Training Profile
- Projectile: 55 Grain | Full Metal Jacket Boat-Tail (FMJ-BT) | Lead Core | Copper Cannelured Jacket
- Case/Primer: Annealed Premium Brass Case | Non-Corrosive Boxer Primed | Clean-Burning Propellant | Reloadable
- Logistics: 100 Rounds Per Box | American Eagle Training Series
- Dimensions: 5.56x45mm NATO | ~2.65 lbs Per Box | SKU: AE193C
- Application: High-Volume Rifle Training, Tactical Drills, Benchrest Practice, and Plinking | AR-15 and 5.56 NATO Chambered Rifles
- Standards: NATO Pressures | Factory Precision Quality Manufacturing Benchmarks
Secure consistent rifle performance with Federal American Eagle 5.56 NATO from SMKW, where proven ammunition meets a trusted supply chain built for serious shooters.
