|Place of origin||United States|
Sellier & Bellot
|Variants||.22 Marciante Blue Streak|
|Parent case||.25-35 Winchester|
|Case type||Bottleneck, Rimmed|
|Bullet diameter||.227 in (5.8 mm)|
|Neck diameter||.252 in (6.4 mm)|
.360Hornaday now makes a .227" bullet for this cartridge in the US, Graf's has loaded ammo and brass, and Buffalo Arms and Huntington's Custom Die sells .228" bullets.
|Base diameter||.416 in (10.6 mm)|
|Rim diameter||.500 in (12.7 mm)|
|Case length||2.05 in (52 mm)|
|Overall length||2.51 in (64 mm)|
|Primer type||large rifle|
|Source(s): Barnes, Frank C. "Cartridges of the World." Digest Books, Inc. 3rd Edition: 1972|
The 5.6×52mmR cartridge was created by Charles Newton and produced by Savage Arms in 1912. It is also known as the .22 Savage High-Power and .22 "Imp", and is based upon the .25-35 Winchester cartridge necked down to accept a .227in/.228in diameter bullet. Its original loading was a 70 grain soft point bullet with a velocity of around 2700–2800 feet per second depending on the rifle.
History and Description
Its relatively high velocity for the time and "shocking" power led to an initial surge of popularity, and the "Imp" was attributed with almost magical killing powers even on large and dangerous soft-skinned game such as tigers. Reverend H. R. Caldwell used his .22 Hi-power on 400 pound tigers in China with success, something the Savage rifle company exploited in its advertising for the cartridge in the early days. The famous elephant hunter WDM Bell used a .22 Savage Hi-Power to kill Cape buffalo in West Africa in the 1920s, while it was used in the UK on deer as large as Red Stags, but it fell out of favour as a big game cartridge due to its small caliber and light bullets. Other .22 Centrefires cartridges outstripped it in performance such as the .220 Swift, and after the 1950s, with the advent of the .222 Remington, the cartridge was considered obsolete. Today it is regarded as a vintage round, and aficionado's use it for small game hunting in similar applications as the .222 and the .223 Remington; although it is used for deer hunting where it is legal to do so. In Europe the cartridge is still chambered in combination guns, and the cartridge is still used by hunters for smaller European deer species such as Roe deer.
No ammunition or mass-market rifle-making company in the U.S. produces the .22SHP as of 2007, either as a cartridge or a factory chambering. Norma, Sellier & Bellot, and Wolf Ammunition (through their "gold" line) still manufacture ammunition for the European market, and export it to the U.S. In the 5.6×52mmR designation this cartridge remains significant among hunters in Europe, where it is often a chambering in drillings and similar combination guns.
Bullet diameter: .227"
Case length: 52 mm
Loads: 70 gr @ 2850 ft/s
- Landis, Charles S. Twenty-Two Caliber Varmint Rifles (1947) Small Arms Technical Publishing Company p.206
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