From Wikipedia, the free encyclopedia:
"The .375 Holland & Holland Magnum is a powerful rifle round and arguably the best-known medium-bore cartridge in the world. A truly classic cartridge, the .375 H&H was only the second cartridge ever to feature a belt, now common among magnum rounds. It was introduced by the British company Holland & Holland in 1912 as the .375 Belted Rimless Nitro-Express. It initially used cordite propellant which was made in long strands - hence the tapered shape of this cartridge, which was also to ensure smooth chambering and extraction from a rifle's breech.
The .375 H&H is often cited as one of the most useful all-round rifle cartridges, especially where large and dangerous game occurs. With relatively light bullets in the region of 235 to 270 grains (15 to 17 g), it is a flat-shooting, fairly long-range cartridge ideal for use on light to medium game. With heavy bullets of 300 grain (19 g) and greater, it has the punch necessary for large, thick-skinned dangerous game. In many regions with thick-skinned dangerous game animals, the .375 H&H is seen as the sensible minimum acceptable calibre, and in many places (in Africa, primarily) it is now the legal minimum for hunting such game. African game guides, professional hunters, and dangerous game cullers have repeatedly voted the .375 H&H as their clear preference for an all-round calibre, if they could only have one rifle.
Unlike what is seen in most calibers, many .375 H&H rifles also achieve nearly the same point of impact over a wide range of bullet weights at all commonly used distances, further simplifying a professional hunter's choice in selecting different grain bullets based upon the game hunted, without requiring significant scope or sight adjustments, which further serves to popularize the .375 H&H Magnum among professional hunters (PHs).
A typical factory load will launch a 270 grain (17 g) spitzer bullet at 2,690 ft/s (820 m/s) with 4,337 ft·lbf. (5880 J) of energy at the muzzle. This load has approximately the same trajectory as the 180-grain (12 g) bullet from a .30-06 Springfield.
There are a great number of rifles (and even a few handguns) chambered for the .375 H&H. Many types of actions are used, including single-shots, double-rifles, and bolt actions. When hunting dangerous game, a double-rifle or a controlled-feed bolt action rifle is most commonly recommended, as a quick follow-up shot may be necessary, and reliability of the firearm becomes of paramount importance."
.375 H&H Magnum. (2009, March 2). In Wikipedia, The Free Encyclopedia. Retrieved 00:25, March 23, 2009, from http://en.wikipedia.org/w/index.php?title=.375_H&H_Magnum&oldid=274337275