.222 Remington
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| .222 Remington | ||
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| Type | Rifle | |
| Place of origin |  USA |
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| Production history | ||
| Designer | Mike Walker | |
| Designed | 1950 | |
| Manufacturer | Remington | |
| Specifications | ||
| Case type | Rimless, bottleneck | |
| Bullet diameter | .224 in (5.7 mm) | |
| Neck diameter | .253 in (6.4 mm) | |
| Shoulder diameter | .357 in (9.1 mm) | |
| Base diameter | .376 in (9.6 mm) | |
| Rim diameter | .378 in (9.6 mm) | |
| Case length | 1.700 in (43.2 mm) | |
| Overall length | 2.130 in (54.1 mm) | |
| Case capacity | 26.9 gr H2O (1.749 cm³) | |
| Rifling twist | 1 in 12 in (300 mm) | |
| Primer type | Small rifle | |
| Maximum pressure | 50,000 psi (340 MPa) | |
| Ballistic performance | ||
| Bullet weight/type | Velocity | Energy |
| 40 gr (2.6 g) HP | 3,583 ft/s (1,092 m/s) | 1,141 ft·lbf (1,547 J) |
| 50 gr (3.2 g) SP | 3,168 ft/s (966 m/s) | 1,115 ft·lbf (1,512 J) |
| 55 gr (3.6 g) SP | 3,095 ft/s (943 m/s) | 1,170 ft·lbf (1,590 J) |
| 60 gr (3.9 g) VMax | 2,937 ft/s (895 m/s) | 1,150 ft·lbf (1,560 J) |
| Test barrel length: 24" Source(s): Hodgdon [1] |
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The .222 Remington aka the Triple Deuce/Triple Two/Treble Two is a centerfire rifle cartridge introduced in 1950, and was the first commercial rimless .22 (5.56 mm) cartridge made in the United States. The .222 Remington was an entirely new design, not derived from any previously existing cartridge.[2]
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[edit] Introduction
The .222 Remington was introduced in the Remington Arms Model 722 bolt action rifle, and was an instant success. Factory rifles often produce groups of one minute of arc (0.3 mrad) or less with no tuning. The accuracy and flat trajectory of the cartridge resulted in the adoption of the round for varmint and benchrest rifles. While the faster .220 Swift and .22-250 provides more reach, it is at the expense of more powder (roughly 50% more), muzzle blast, and barrel erosion. For example, maximum loads for a .222 Remington average 25 grains (1.6 g), the .22-250 averages 41 grains (2.7 g), and the .220 Swift averages 46 grains (3.0 g) for its maximum.[1]
The .222 Remington is popular in Europe where it is known as 5.7×43. Sako was one of the first European makers to introduce .222 Remington rifles and cartridges, and German and Austrian hunters quickly adopted the .222 Remington for hunting smaller deer sized game.
[edit] Obsolescence
The .222 Rem. was finally eclipsed in benchrest competition by the 6 mm PPC.
When the US military was looking for a new smallbore rifle cartridge, Remington started with the .222 Remington, and stretched it to increase powder capacity by about 20% in 1958 to make the .222 Remington Magnum. The greater powder capacity put the velocities between the standard .222 Remington and the 22-250. The cartridge was not accepted by the military, but it was introduced commercially. In 1963, the 5.56 x 45 mm, also based on a stretched .222 Rem. case, was adopted along with the new M16 rifle. The 5.56 mm cartridge had a capacity only slightly less (5%) than the .222 Rem. Mag. The new 5.56x45mm cartridge was commercialized by Remington, the .223 Remington. Given the close performance to other cartridges and military acceptance, both the .222 Remington and the .222 Rem. Mag. faded quickly into obsolescence, being replaced by the .223 Remington.
While the .222 Remington is rarely found in current production in America, its derivative cartridges are among the most popular in the world. In addition to the .222 Rem. Mag. and .223 Remington, the .222 has also served as the parent case for the .221 Fireball, the fastest production handgun cartridge, and the new .204 Ruger, the fastest production rifle cartridge.
Still, the .222 Remington has its marketplace and enjoys considerable popularity in Europe where producers like Sako, Tikka and Sauer chamber rifles for this caliber. Firearms that are usually chambered for the .223 Remington/5.56x45mm NATO caliber are often rechambered for the .222 Rem. for sale in countries where regulations restrict or forbid civilian ownership of "military calibers". Examples of countries with such legislation include France and Spain.
[edit] See also
[edit] References
- Speer Reloading Manual #11, Omark Industries, Inc. 1987
- Cartridge Dimensions
- Cartridge dimensions and load data at Accurate Powder
[edit] External links
- .222 Remington and .222 Rem Mag. by Chuck Hawks
