For long range neither will beat a .243 with federal 85 gr sierras,in trajectory or wind drift. It also does a number on deer.
Was playing around this past weekend with my .243.I tried a shot on a rock we picked out across a canyon, we estimated it to 450-500 yds. first shot hit about 3 inches high, second shot nailed it, was about a 4" size rock. I couldnt believe how little I had to compensate at that distance.