.280 Ross
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The .280 Ross, also known as the .280 Nitro cartridge, is an approximately 7mm bullet diameter rifle round developed in Canada by Sir Charles Ross Bart. and his Ross Rifle Company of Quebec, Canada for use as a Canadian military cartridge, and in a civilianised and sporterised version of his controversial Mark II Ross rifle, and first produced in 1906.
Firing a 140-grain bullet at a muzzle velocity of 2,900 fps, the new cartridge qualified for the contemporary designation "magnum". It was popular as a military sniper's cartridge, in addition to achieving some celebrity as an African plains game cartridge in the years immediately following the First World War. Ballistically, the .280 Ross cartridge's performance was broadly comparable to that of the more modern .280 Remington / 7mm Express Remington.
As a commercially manufactured item this cartridge has been obsolete for some years, although handloaders continue to load succesfully for it, using swaged and necked-down .300 Remington SA Ultra Mag cases.
[edit] Sources and References
- Phillips, Roger F., Francois J. Dupuis and John A. Chadwick, The Ross Rifle Story (ISBN 0973241608)
