CaliberAtlas › .338 Ultra Mag
Common uses: Hunting, Big Game, Long Range
| Type | rifle (centerfire) |
| Typical load | 250gr SPBT |
| Muzzle velocity | 2860 fps |
| Muzzle energy | 4544 ft-lb |
| G1 ballistic coefficient | 0.473 |
| Case length | 72 mm |
| Overall length | 95 mm |
| Range (yd) | Velocity (fps) | Energy (ft-lb) | Drop (in) |
|---|---|---|---|
| 0 | 2860 | 4544 | 0 |
| 100 | 2717 | 4101 | -7 |
| 200 | 2581 | 3701 | -28 |
| 300 | 2452 | 3340 | -63 |
| 400 | 2329 | 3015 | -112 |
| 500 | 2213 | 2721 | -175 |
Guidelines only — ammunition choice, conditions, and shooter skill matter. Always follow local laws.
The .338 Ultra Mag is a centerfire rifle cartridge, delivering very powerful energy on target, which shapes where it fits between varmint work, big-game hunting, and precision shooting. A representative 250-grain loading leaves the muzzle at roughly 2860 fps and carries about 4544 ft-lbs of energy, with a G1 ballistic coefficient near 0.473. Those numbers place it squarely in its intended performance envelope. Based on its energy and trajectory, ethical ranges work out to roughly medium game such as deer to about 400 yards; larger game to about 500 yards — always within the limits of your own accuracy and local regulations. Recoil is generally stout 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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