Anybody know how many elephants Bell killed with the 7x57? Think they were calling it a 276 Rigby then!
"They" were not calling a 276 Rigby then. The British called it the .275 Rigby.
Bell's was a .275, and he killed a bunch of elephants with it--using brain shots with "solid" bullets, which is irrelevant to this discussion. In fact, he actually preferred the 6.5x54 Mannlicher-Schoenauer (which was called the .256 by the Brits) using solids of around 160 grains, because his customized M-S carbine. But the Austrian ammo available had brittle cases, which often separated--so he switched to his .275.. But for really tough-angle shots in thicker cover he used the .318 Westley Richards, with 250-grain bullets.
All of this is still irrelevant to shooting big game with expanding bullets.
