Cartridge Collector > Cartridges > BRITISH SPORTING RIFLE > BRITISH SPORTING UP TO .299" > 275 β„–.2 MAGNUM (7MM RIGBY FLANGED MAG)
275 β„–.2 MAGNUM (7MM RIGBY FLANGED MAG)

Developed by Rigby ca 1927 by necking down the 375 2ΒΌ” Flanged. This cartridge is similiar to the 7mm Holland Flanged Magnum, but with thicker rim.