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5.56 NATO - Fiocchi Ammo Shooting Dynamics 55 Gr Full Metal Jacket Boat Tail (556M193L) - 50 Round Box
Caliber: 5.56×45 mm NATO
Bullet Type: Full Metal Jacket Boat Tail (FMJ-BT)
Bullet Weight: 55 grains (3.56 g)
Fiocchi Shooting Dynamics 5.56 NATO 55 gr FMJ-BT offers reliable, accurate performance for training and target shooting. The boat-tail design improves ballistic stability and consistency at longer ranges, making it a solid choice for AR-style rifles and other 5.56 NATO platforms.
Packaged in a 50-round box.
Ballistic Data
Muzzle Velocity: ~3,240 fps (988 m/s)
Muzzle Energy: ~1,282 ft·lb (1,738 J)
Typical performance from a 20″ test barrel:
| Range | Velocity (fps) | Energy (ft·lb) | Trajectory Drop* |
|---|---|---|---|
| 0 yd | ~3,240 fps | ~1,282 ft·lb | — |
| 100 yd | ~2,900 fps | ~1,026 ft·lb | ≈ 0″ (zero) |
| 300 yd | ~2,450 fps | ~732 ft·lb | ≈ −12.1″ (−30.7 cm) |
*Trajectory drop is approximate, assuming a 100 yd zero. Actual results will vary by rifle, barrel length, and conditions.
Technical Specs
Primer Type: Boxer, non-corrosive
Case: Brass, reloadable
Bullet Construction: Lead core with copper jacket, boat-tail profile
Fiocchi SKU: 556M193L
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