713 yards on a bull elk last season. Angle and wind made it seem a lot longer. Had I not had my 338 Edge which I'd shot out to 2000 yards, I would have passed. But I really knew that load and used a spotter shot just to be sure. The herd bull had been shot by another hunter much closer, so while the herd was calm when I shot, they were NOT sticking around for the 45 minutes it would have taken me to scale the mountain and close the range.
The other elk I shot with a rifle was 618. Similar story, he came in above us, had us pinned down visually, and it was shoot him there or spook him by moving. That was with a 300WM in better conditions.
Several prairie dogs in the 600-700yd range with a 243AI, but a few more shots to walk it in.
Shot an absolute mess of deer in the 350-500 yard range. Love shooting them close and shot a mess in close too, but with limited hunting time and a need to fill the freezer I often go afield with a short range gun in hand and a long range one slung over my shoulder.