| .276 Pedersen | ||||||||
|---|---|---|---|---|---|---|---|---|
 En-bloc clip loaded with 10 rounds of .276 Pedersen. Image from John Pedersen patent. | ||||||||
| Type | Rifle | |||||||
| Place of origin | United States | |||||||
| Service history | ||||||||
| In service | 1923–1932 (experimental) | |||||||
| Used by | United States | |||||||
| Production history | ||||||||
| Designer | John Pedersen | |||||||
| Designed | 1923 | |||||||
| Specifications | ||||||||
| Case type | Rimless, bottleneck | |||||||
| Bullet diameter | .2842 in (7.22 mm) | |||||||
| Neck diameter | .313 in (8.0 mm) | |||||||
| Shoulder diameter | .385 in (9.8 mm) | |||||||
| Base diameter | .450 in (11.4 mm) | |||||||
| Rim diameter | .450 in (11.4 mm) | |||||||
| Case length | 2.023 in (51.4 mm) | |||||||
| Overall length | 2.855 in (72.5 mm) | |||||||
| Primer type | Large rifle | |||||||
| Ballistic performance | ||||||||
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The .276 Pedersen (7×51mm) round was an experimental 7 mm cartridge developed for the United States Army. It was used in the Pedersen rifle and early versions of what would become the M1 Garand.