There is but one cartridge that I have no use for, well maybe one caliber, and that would be anything in a .277 groove dia. What in Gods name possessed anyone to create such an abortion is beyond me when the 264 and 284 already existed. Trust the Americans to do something like this though, cause the other 2 have metric names and "we couldn't have that, how would we ever figure out what size they really was". Nowhere else on the planet is there another cartridge using a .277 bullet, except the 3 abortions "Made in America". Roy Weatherby even hated it and said it was his least favorite of his calibers but being a contemporary of O'Connor and seeing the influence he was peddling, he felt it necessary for smart marketing. I never liked O'Connor either !!!
Even the Brits, with their way of really screwing up calibers, never happened upon a .277. It's even dumber than a 23 caliber in my estimation...........
Really you have to ask yourself, if you woke up tomorrow and the 277 didn't exist and never had, would you notice? Would the hunting scene really be changed? Would there be a whole class of animals that couldn't have been taken because the .277 bore didn't exist? REALLY.............