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.318 Westley Richards
The .318 Westley Richards,also known as the .318 Rimless Nitro Express, is a proprientry medium bore centerfire rifle cartridge developed by Westley Richards.
==Design & use==
Westley Richards introduced the .318 in 1910, primarily for use in their M 98 Mauser based bolt action sporting rifle.
The .318 Westley Richards is a rimless bottlenecked cartridge primarily intended for use in Africa. The bullet diameter is actually .330", the naming is due to British nomenclature which sometimes names cartidges by their bore diameter rather than the more commonly applied groove diameter. The most common loading was a 250 grain bullet with a listed speed of 2400 fps, a lighter loading firing a 180 grain bullet at 2700 fps was also offered for lighter game. The .318 Westley Richards looks very similar to the American .30-06 Springfield and provides comparable performance to its contemporary the .333 Jeffery and the more modern wildcat .338-06.
One user was the elephant hunter W.D.M. "Karamojo" Bell, who later wrote the .318 Westly Richards was a more reliable killer for certain shots than his favoured .275 Rigby, but the .275 Rigby was a "surgeons" rifle. 〔Passmore〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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