The .276 Pedersen (7 x 51 mm) round was an experimental 7 mm cartridge developed for the U.S. Army and used in the Pedersen rifle and early versions of what would become the M1 Garand rifle.
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| - The .276 Pedersen (7 x 51 mm) round was an experimental 7 mm cartridge developed for the U.S. Army and used in the Pedersen rifle and early versions of what would become the M1 Garand rifle.
- Developed in 1923 in the United States, it was intended to replace the .30-06 Springfield in new semi-automatic rifles and machine guns. When first recommended for adoption, M1 Garand rifles were chambered for the .276 Pedersen, which held ten rounds in its unique en-bloc clips. The .276 Pedersen was a shorter, lighter and lower pressure round than the .30-06, which made the design of an autoloading rifle easier than the long, powerful .30-06. The US Army Chief of Staff Gen. Douglas MacArthur rejected the .276 Pedersen Garand in 1932 after verifying that a .30-06 version was feasible.
- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | .276 Pedersen |- | colspan="3" style="text-align: center; font-size: 90%; border-bottom: 1px solid #aaa; line-height: 1.25em;" | Image:Pedersen en-Block Clip.PNGEn-bloc clip loaded with 10 rounds of .276 Pedersen. Image from John Pedersen patent. |- ! style="padding-right: 1em;" | Type | colspan="2" | Rifle |- ! style="padding-right: 1em;" | Place of origin | colspan="2" | United States |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Service history )
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| - En-bloc clip loaded with 10 rounds of .276 Pedersen. Image from John Pedersen patent.
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abstract
| - The .276 Pedersen (7 x 51 mm) round was an experimental 7 mm cartridge developed for the U.S. Army and used in the Pedersen rifle and early versions of what would become the M1 Garand rifle.
- Developed in 1923 in the United States, it was intended to replace the .30-06 Springfield in new semi-automatic rifles and machine guns. When first recommended for adoption, M1 Garand rifles were chambered for the .276 Pedersen, which held ten rounds in its unique en-bloc clips. The .276 Pedersen was a shorter, lighter and lower pressure round than the .30-06, which made the design of an autoloading rifle easier than the long, powerful .30-06. The US Army Chief of Staff Gen. Douglas MacArthur rejected the .276 Pedersen Garand in 1932 after verifying that a .30-06 version was feasible.
- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | .276 Pedersen |- | colspan="3" style="text-align: center; font-size: 90%; border-bottom: 1px solid #aaa; line-height: 1.25em;" | Image:Pedersen en-Block Clip.PNGEn-bloc clip loaded with 10 rounds of .276 Pedersen. Image from John Pedersen patent. |- ! style="padding-right: 1em;" | Type | colspan="2" | Rifle |- ! style="padding-right: 1em;" | Place of origin | colspan="2" | United States |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Service history |- ! style="padding-right: 1em;" | In service | colspan="2" | 1923-1932 (experimental) |- ! style="padding-right: 1em;" | Used by | colspan="2" | United States |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Production history |- ! style="padding-right: 1em;" | Designer | colspan="2" | John Pedersen |- ! style="padding-right: 1em;" | Designed | colspan="2" | 1923 |- |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Specifications |- |- ! style="padding-right: 1em;" | Case type | colspan="2" | Rimless, bottleneck |- ! style="padding-right: 1em;" | Bullet diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Neck diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Shoulder diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Base diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Rim diameter | colspan="2" | in (mm ) |- |- ! style="padding-right: 1em;" | Case length | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Overall length | colspan="2" | in (mm ) |- |- |- ! style="padding-right: 1em;" | Primer type | colspan="2" | Large rifle |- |- |- |- |- |- |- |} The .276 Pedersen (7 x 51 mm) round was an experimental 7 mm cartridge developed for the United States Army and used in the Pedersen rifle and early versions of what would become the M1 Garand rifle.
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