The .375 stumbles into the big bore group not because of bore size, but because of the game taken with it over the last 95 years. It is truly a world class cartridge - easy to shoot, accurate, and of flat trajectory. The .375 takes small game without undue damage and is able to take large game with enough damage to ensure humane kills. I no longer have light, medium and heavy big game rifles, because all I need is a .375.