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Common uses: Hunting, Big Game
| Type | rifle (centerfire) |
| Typical load | 180gr Federal Vital-Shok Nosler Partition |
| Muzzle velocity | 2880 fps |
| Muzzle energy | 3316 ft-lb |
| Published G1 ballistic coefficient | 0.474 |
| Case length | 72.4 mm |
| Overall length | 91.4 mm |
| Range (yd) | Velocity (fps) | Energy (ft-lb) | Drop (in) |
|---|---|---|---|
| 0 | 2880 | 3315 | -1.5 |
| 100 | 2682 | 2875 | 0 |
| 200 | 2492 | 2482 | -3.4 |
| 300 | 2311 | 2134 | -12.3 |
| 400 | 2137 | 1825 | -27.8 |
| 500 | 1971 | 1552 | -50.9 |
At 1,000 yards, .300 H&H Mag. (180gr at 2880 fps, 100 yd zero, standard conditions) has a modeled come-up of about 32.4 MOA / 9.4 MIL, retaining 1286 fps (transonic).
| Range (yd) | Velocity (fps) | State | Drop (in) | Elev (MOA) | Elev (MIL) |
|---|---|---|---|---|---|
| 300 | 2311 | Supersonic | -12.3 | 3.9 | 1.14 |
| 400 | 2137 | Supersonic | -27.8 | 6.6 | 1.93 |
| 500 | 1971 | Supersonic | -50.9 | 9.7 | 2.83 |
| 600 | 1813 | Supersonic | -83.0 | 13.2 | 3.84 |
| 700 | 1664 | Supersonic | -125.7 | 17.1 | 4.99 |
| 800 | 1525 | Supersonic | -181.0 | 21.6 | 6.29 |
| 900 | 1399 | Supersonic | -251.3 | 26.7 | 7.76 |
| 1000 | 1286 | Transonic | -339.4 | 32.4 | 9.43 |
Extended predictions beyond 500 yards are modeled from the same G1 engine — useful for initial DOPE, but outside the 500-yard manufacturer-table validation audit. Confirm with observed DOPE, especially near transonic.
A retained-energy reference only — not a shoot/don't-shoot distance. Real effective range depends on your accuracy, shot placement, bullet construction, and conditions. The ~1,000 ft-lb (deer-sized) and ~1,500 ft-lb (elk-sized) figures are commonly cited rules of thumb, not standards.
Your barrel, ammunition lot, and conditions will differ — always verify against the manufacturer's data and your own rifle.
For decades the .300 H&H was America's benchmark .30-caliber magnum, prized for its flat trajectory, hard-hitting performance on large game, and a reputation for fine accuracy that made it a target favorite before it became a hunting standard. Its long, tapered, belted case feeds smoothly and burns powder efficiently, delivering excellent velocity with heavy 180- to 220-grain bullets suited to elk, moose, bear, and open-country game at extended range. The same long case is also its chief limitation: it requires a full-length magnum action and gradually lost ground to the shorter, higher-pressure .300 Winchester Magnum, which fits standard-length actions and matches or exceeds its ballistics. Today it is regarded as a classic, somewhat nostalgic choice, still capable and well-liked by traditionalists but no longer common in new factory rifles or on ammunition shelves.
Introduced by the British gunmaker Holland & Holland in 1925 as the "Super Thirty," the .300 H&H Magnum was derived from the firm's earlier .375 H&H Magnum, sharing its long, belted, gently tapered case. It was conceived as a flat-shooting big-game round for the .30-caliber shooter who wanted more reach and power than the .30-06 could offer. The cartridge earned lasting fame in the United States when Ben Comfort won the 1,000-yard Wimbledon Cup match with it in 1935, and Winchester's decision to chamber the Model 70 for it in 1937 cemented its place in the American market.
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