CaliberAtlas › 5.56×45mm NATO
Common uses: Tactical, Target, Varmint
| Type | rifle (centerfire) |
| Typical load | 62gr FMJ |
| Muzzle velocity | 3050 fps |
| Muzzle energy | 1281 ft-lb |
| G1 ballistic coefficient | 0.304 |
| Case length | 45 mm |
| Overall length | 58 mm |
| Common twist rate | 1:7" |
| Range (yd) | Velocity (fps) | Energy (ft-lb) | Drop (in) |
|---|---|---|---|
| 0 | 3050 | 1281 | 0 |
| 100 | 2898 | 1156 | -7 |
| 200 | 2753 | 1043 | -26 |
| 300 | 2615 | 942 | -59 |
| 400 | 2484 | 850 | -105 |
| 500 | 2360 | 767 | -164 |
Guidelines only — ammunition choice, conditions, and shooter skill matter. Always follow local laws.
The 5.56×45mm NATO is a centerfire rifle cartridge, delivering moderate energy on target, which shapes where it fits between varmint work, big-game hunting, and precision shooting. A representative 62-grain loading leaves the muzzle at roughly 3050 fps and carries about 1281 ft-lbs of energy, with a G1 ballistic coefficient near 0.304. Those numbers place it squarely in its intended performance envelope. Based on its energy and trajectory, ethical ranges work out to roughly small game and varmints to about 200 yards; medium game such as deer to about 250 yards; larger game to about 200 yards — always within the limits of your own accuracy and local regulations. Recoil is generally mild for the class, and our database tracks 1 factory loading so you can compare bullet weights and velocities for your specific use. Figures here are for reference and informational use — always verify against manufacturer data.
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