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.
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.