There is no "magic" caliber that is inherrently better than everything else. There really is no reason for this argument to continue, except for the entertaining comments and jabs at certain people that take it sooo well.
The .277" bullets are a little bigger than the .264" bullets, and the .284" bullets are a little bit bigger yet. Bullet construction and velocity make a whole lot more difference in performance than these small differences in bullet diameter. I have rifles that shoot .264" and .284" bullets, and have had the .277", though not at this time. I have a hankering to try a 270 Win with 160gr Partitions. Maybe someday. Maybe not.
Either way I will continue eating venison.
