.450 Nitro Express
.450 Nitro Express also known as the .450 Nitro Express 31⁄4-inch is a rifle cartridge designed for hunting dangerous game such as elephant, rhino, cape buffalo, lion, and leopard. This cartridge is used almost exclusively in double rifles for hunting in the Tropics or hot climates in general and is associated with the Golden Age of African safaris and Indian shikars.
| .450 Nitro Express | ||||||||||||||||
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| Type | Rifle cartridge | |||||||||||||||
| Place of origin | United Kingdom | |||||||||||||||
| Production history | ||||||||||||||||
| Designer | John Rigby & Company | |||||||||||||||
| Designed | 1898 | |||||||||||||||
| Produced | 1898–present | |||||||||||||||
| Specifications | ||||||||||||||||
| Parent case | .450 Black Powder Express | |||||||||||||||
| Case type | Rimmed, straight | |||||||||||||||
| Bullet diameter | .458 in (11.6 mm) | |||||||||||||||
| Neck diameter | .481 in (12.2 mm) | |||||||||||||||
| Base diameter | .545 in (13.8 mm) | |||||||||||||||
| Rim diameter | .624 in (15.8 mm) | |||||||||||||||
| Rim thickness | .042 in (1.1 mm) | |||||||||||||||
| Case length | 3.25 in (83 mm) | |||||||||||||||
| Overall length | 3.95 in (100 mm) | |||||||||||||||
| Case capacity | 130.0 gr H2O (8.42 cm3) | |||||||||||||||
| Rifling twist | 1-15 in (381 mm) | |||||||||||||||
| Primer type | Boxer/Berdan | |||||||||||||||
| Maximum pressure | 44,237 psi (305.00 MPa) | |||||||||||||||
| Ballistic performance | ||||||||||||||||
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| Source(s): "Cartridges of the World" 500gr load specified by ADI-Powders | ||||||||||||||||
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