.242 Rimless Nitro Express
| .242 Rimless Nitro Exress | ||||||||
|---|---|---|---|---|---|---|---|---|
| Type | Rifle | |||||||
| Place of origin | England | |||||||
| Production history | ||||||||
| Designer | Kynoch | |||||||
| Designed | 1923 | |||||||
| Produced | 1923 | |||||||
| Specifications | ||||||||
| Case type | Rimless, bottleneck | |||||||
| Bullet diameter | .253 in (6.4 mm) | |||||||
| Neck diameter | .281 in (7.1 mm) | |||||||
| Shoulder diameter | .405 in (10.3 mm) | |||||||
| Base diameter | .465 in (11.8 mm) | |||||||
| Rim diameter | .465 in (11.8 mm) | |||||||
| Case length | 2.38 in (60 mm) | |||||||
| Overall length | 3.2 in (81 mm) | |||||||
| Primer type | .217/54 | |||||||
| Ballistic performance | ||||||||
| ||||||||
| Source(s): Cartridges of the World.[1] | ||||||||
The .242 Rimless Nitro Express, initially called the .242 Manton was a rimless bottleneck centerfire rifle cartridge developed by Kynoch for J. Manton & Co of Calcutta and introduced in 1923.
The .242 Rimless is very similar to the .243 Winchester in performance, although the cartridge is significantly longer. It fired a 100 gr projectile at 2800 fps.[1]