The .242 Rimless Nitro Express, also known as the .242 Vickers and 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.
+.242 Vickers Performance Comparison Cartridge Bullet weight Muzzle velocity Muzzle energy .242 Rimless Nitro Express .240 Apex .240 Weatherby Magnum .243 Winchester .243 Winchester Super Short Magnum .244 H&H Magnum .246 Purdey 6 mm Lee Navy 6 mm Remington
See also Nitro Express List of rifle cartridges 6mm rifle cartridges
References
External links ".242 Rimless Nitro Express (Vickers)", cartridgecollector.net, retrieved 12 February 2017.