Like Briman I shoot some 6.5 X 55 and 8 X 57 ........ but also shoot the following.......
6.5 X 50 Japanese Arisaka, 7 X 57, 300 Savage (not very exotic) 7.62 X 54, .303 Enfield, 8mm/06, 8 X 56R but not all for hunting. Not that there would be anything wrong with any of them for certain hunting purposes.