Should have bought a 6.5 Grendel upper instead.
If ammo cost is an issue and you don't reload, go 308. 500 and in is nothing for a good 308 gun. I'm not sure where you're gonna find a 500yd deer shot anywhere near here, though...
A friend of mine who is much more into precision rifle shooting than I am (at least at the moment) is quite enamored with the 6 Creedmoor for a number of reasons:I'm debating whether or not to switch out barrels on my .308 AR to match my 6mm Creedmoor bolt gun...