Home › Browse Calibers › .275 H&H Mag.
Common uses: Hunting, Big Game
| Type | rifle (centerfire) |
| Typical load | 160gr reference load |
| Muzzle velocity | 3050 fps |
| Muzzle energy | 3314 ft-lb |
| Stored G1 ballistic coefficient | 0.475 |
| Case length | 63.5 mm |
| Overall length | 3.43 in |
| Range (yd) | Velocity (fps) | Energy (ft-lb) | Drop (in) |
|---|---|---|---|
| 0 | 3050 | 3304 | -1.5 |
| 100 | 2845 | 2874 | 0 |
| 200 | 2648 | 2491 | -2.8 |
| 300 | 2461 | 2151 | -10.6 |
| 400 | 2281 | 1849 | -24.1 |
| 500 | 2109 | 1579 | -44.4 |
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.
Published BCs depend on a reference drag model and stated velocity conditions. A source review does not independently measure a BC. Understanding BC sources
This reference load is not verified factory-load data; confirm the displayed inputs against a reliable published source where available, and verify modeled results with your own rifle.
The .275 H&H is a 7mm belted magnum from the early cordite era, built around the tapered H&H case that made the firm's magnums famous. It was intended for longer-range shooting of medium game such as antelope in Africa and red stag in the Scottish highlands, and was offered in both a rimless form for bolt actions and a lower-pressure flanged form for double and single-shot rifles. Western Cartridge Company offered American loadings from 1925 until U.S. production ceased in 1939. Today it is largely obsolete, long overshadowed by later and more efficient 7mm magnums like the 7mm Remington Magnum, and factory ammunition is scarce. It survives mainly as a collector's and classic-rifle chambering, with Holland & Holland continuing to supply factory-loaded ammunition and most other shooters relying on handloading to feed surviving rifles.
Introduced by the British gunmakers Holland & Holland in 1912 alongside the more famous .375 H&H Magnum, the .275 H&H Magnum was formed by necking down and shortening the belted .375 H&H case to fire a 7mm (.284) bullet.
Run this cartridge in the ballistic calculator · Compare it against another cartridge · How this data is produced