.242 Rimless Nitro Express

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
.242 Rimless Nitro Express
Type Rifle
Place of origin United Kingdom
Production history
Designer Kynoch
Designed 1923
Produced 1923
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
Bullet mass/type Velocity Energy
100 gr (6 g) 2,800 ft/s (850 m/s) 1,740 ft⋅lbf (2,360 J)
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]

See also[edit]


  1. ^ a b Frank C. Barnes, Cartridges of the World, Gun Digest Books, Iola, 2012, ISBN 978-1-4402-3059-2.

External links[edit]