.375 H&H Magnum

colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;"

| .375 H&H Magnum colspan="3" style="text-align: center; font-size: 90%; border-bottom: 1px solid #aaa; line-height: 1.25em;"

|

File:375vs338.png

.375 H&H Magnum (Left) .338 Winchester Magnum (Right) US Quarter for scale Type Big Game Rifle Place of origin England colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;"

| Production history Designer H&H Manufacturer H&H Produced 1912 colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;"

| Specifications Bullet diameter .375 in (

 mm

)

Neck diameter .404 in (

 mm

)

Shoulder diameter .448 in (

 mm

)

Base diameter .513 in (

 mm

)

Rim diameter .532 in (

 mm

)

Rim thickness .220 in (

 mm

)

Case length 2.850 in (

 mm

)

Overall length 3.6 in (

 mm

)

Primer type large rifle magnum colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;"

| Ballistic performance Bullet weight/type Velocity Energy style="vertical-align:middle; border-bottom: 1px dotted #aaa;

" | 200 gr (

 g)

JFP||style="border-bottom: 1px dotted #aaa;

"|3,195 ft/s (

 m/s)

||style="border-bottom: 1px dotted #aaa;

"|4,534 ft·lbf (

 J)

style="vertical-align:middle; border-bottom: 1px dotted #aaa;

" | 235 gr (

 g)

SP||style="border-bottom: 1px dotted #aaa;

"|2,964 ft/s (

 m/s)

||style="border-bottom: 1px dotted #aaa;

"|4,585 ft·lbf (

 J)

style="vertical-align:middle; border-bottom: 1px dotted #aaa;

" | 250 gr (

 g)

SP||style="border-bottom: 1px dotted #aaa;

"|2,835 ft/s (

 m/s)

||style="border-bottom: 1px dotted #aaa;

"|4,463 ft·lbf (

 J)

style="vertical-align:middle; border-bottom: 1px dotted #aaa;

" | 270 gr (

 g)

FS||style="border-bottom: 1px dotted #aaa;

"|2,694 ft/s (

 m/s)

||style="border-bottom: 1px dotted #aaa;

"|4,352 ft·lbf (

 J)

style="vertical-align:middle; border-bottom: 1px dotted #aaa;

" | 300 gr (

 g)

SPBT||style="border-bottom: 1px dotted #aaa;

"|2,645 ft/s (

 m/s)

||style="border-bottom: 1px dotted #aaa;

"|4,661 ft·lbf (

 J)

Source: Hodgdon Online Reloading Data

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 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.

.375 H&H cartridge specification

• Bullet diameter: .375 in (9.525 mm)
• Maximum case length: 2.850 in (72.39 mm)
• Trim-to length: 2.840 in (72.14 mm)
• Maximum cartridge length: 3.600 in (91.44 mm)
• Shoulder angle: 15 degrees
• Industry maximum pressure: 53,000 CUP (Copper units of pressure)
• SAAMI maximum pressure: 62,000 lbf/in² (430 MPa)
• Case capacity: 96.3 grains (6.24 g) of water

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 bolt action rifle is recommended, as a quick follow-up shot may be necessary.

Categories

Cartridge:rifles