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.256 Newton
.256 Newton | ||||||||||||
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Type | Hunting | |||||||||||
Place of origin | United States | |||||||||||
Production history | ||||||||||||
Designer | Charles Newton | |||||||||||
Designed | 1913 | |||||||||||
Manufacturer | Western Cartridge Company | |||||||||||
Specifications | ||||||||||||
Parent case | .30-06 Springfield | |||||||||||
Case type | Rimless | |||||||||||
Bullet diameter | .264 in (6.7 mm) | |||||||||||
Neck diameter | .291 in (7.4 mm) | |||||||||||
Shoulder diameter | .418 in (10.6 mm) | |||||||||||
Base diameter | .471 in (12.0 mm) | |||||||||||
Rim diameter | .473 in (12.0 mm) | |||||||||||
Rim thickness | .049 in (1.2 mm) | |||||||||||
Case length | 2.440 in (62.0 mm) | |||||||||||
Overall length | 3.40 in (86 mm) | |||||||||||
Rifling twist | 1 in 10″ | |||||||||||
Primer type | large rifle | |||||||||||
Ballistic performance | ||||||||||||
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Source(s): Newton Arms Company Catalog. 14th edition, 1920. IN Barnes, Frank C. “Cartridges of the World” Digest Books Inc., 1972. |
The .256 Newton is a high-velocity rimless cartridge and was developed by Charles Newton in 1913 in conjunction with the Western Cartridge Company.
It is a 30-06 Springfield cartridge, shortened[1] and necked down to .264, with a different shoulder angle. However, the .256 Newton and the .30-06 are not interchangeable. The .256 Newton and the 6.5-06 are not interchangeable.
References
- Jump up^ Barnes, Frank, and Amber, John T. Cartridgs of the World (DBI,