Where I grew up in PA, we had 1000 yd shooting ranges and 1000 yd shooting leagues. I know guys that hunt elk and deer at long ranges and sometimes over 1000 yds but they have very specific equipment to do that, shoot year round and hunt in groups off tables with heavy rifles, rests and wind flags. They also are shooting at bedded or standing deer, with snow on the ground. Not my style of preferred hunting. I have a rifle set up for those ranges but I seldom use it.
I normally limit myself to 400 yds in the field and I've passed on more shots at that range then I've taken but to each their own. I prefer larger calibers but if was buying a 6.5 it would probably be a Creedmoor.