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The Ross rifle was a straight-pull bolt action .303 inch-calibre rifle produced in Canada from 1903 until 1918.〔Phillips, J. et al ''The Ross Rifle Story'' (The Casket Printing & Publishing Co., 2005).〕 The Ross Mk.II (or "model 1905") rifle was highly successful in target shooting before WWI, but the close chamber tolerances, lack of primary extraction and overall length made the Mk.III (or "1910") Ross rifle unsuitable for the conditions of trench warfare and the often poor quality ammunition issued.〔Duguid, Col. A.F. ''A Question of Confidence; The Ross Rifle in the Trenches" (Service Publications, 1999).〕 By 1916, the rifle had been withdrawn from front line service, but continued to be used by many snipers of the Canadian Expeditionary Force until the end of the war due to its exceptional accuracy.〔''Without Warning: Canadian Sniper Equipment'' (Service Publications, 2005).〕 The Ross Rifle Co. made sporting rifles from early in its production, most notably chambered in .280 Ross, introduced in 1907. This cartridge is recorded as the first to achieve over 3000 feet per second velocity, and the cartridge acquired a very considerable international reputation among target shooters and hunters.〔 ==History== During the Second Boer War, a minor diplomatic fight broke out between Canada and the United Kingdom, after the latter refused to license the Lee–Enfield SMLE design for production in Canada. Sir Charles Ross offered his newly designed straight-pull rifle as a replacement. Ross was well connected in Canadian society and eventually landed his first contract in 1903 for 12,000 ''Mark I Ross'' rifles. In this design, the bolt locking lugs are mounted on a screw, and when the operating handle is pulled or pushed, the screw automatically turns to rotate the locking lugs into place in the action receiver. The design is generally similar to that used on most artillery pieces. Unlike the more common bolt actions found in the Mauser and Lee–Enfield, the Ross action did not need to have the handle rotated a quarter turn before the bolt was pulled back, and this feature theoretically offered a higher rate of fire. In addition, unlike the Lee–Enfield, the Ross rifle could be disassembled more quickly without special tools,〔Rawlings, Bill. ''Trench Warfare: Technology and the Canadian Corps 1914–1918''. (University of Toronto Press, 1992). p.12〕 though it was heavier. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ross rifle」の詳細全文を読む スポンサード リンク
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