.450/400 Nitro Express
The .450/400 Nitro Express is a Nitro Express rifle cartridge that is produced in three case lengths: 23⁄8-inches, 3 inches and 31⁄4-inches, and is intended for use in single shot and double rifles. The 3-inch and 31⁄4-inch versions are considered classic Nitro Express cartridges.
| .450/400 Nitro Express (31⁄4-inch) | ||||||||
|---|---|---|---|---|---|---|---|---|
.450/400 31⁄4 inch Nitro Express in a line up. | ||||||||
| Type | Rifle | |||||||
| Place of origin | United Kingdom | |||||||
| Production history | ||||||||
| Designer | Kynoch, Jeffery, and others | |||||||
| Designed | 1899 | |||||||
| Manufacturer | Various | |||||||
| Produced | 1899–present | |||||||
| Specifications | ||||||||
| Parent case | .450/400 Black Powder Express | |||||||
| Case type | Rimmed, bottleneck | |||||||
| Bullet diameter | .405 in (10.3 mm) | |||||||
| Neck diameter | .432 in (11.0 mm) | |||||||
| Shoulder diameter | .502 in (12.8 mm) | |||||||
| Base diameter | .544 in (13.8 mm) | |||||||
| Rim diameter | .614 in (15.6 mm) | |||||||
| Rim thickness | .042 in (1.1 mm) | |||||||
| Case length | 3.25 in (83 mm) | |||||||
| Overall length | 3.85 in (98 mm) | |||||||
| Primer type | Kynoch #40 | |||||||
| Ballistic performance | ||||||||
| ||||||||
| Test barrel length: 26 inches Source(s): Kynoch & Barnes | ||||||||
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