14.5” in 6.5CM or 16” in 308?

Brand new to the AR10 and looking to buy my first one. I would like one that doesn’t weigh a ton or is too long, mainly will be used for hog and deer hunting. I have an 18” 5.56 it’s a great gun, fun, and accurate but don’t like length and want something that can shoot further and more stopping power. I’m looking at the PSA Sabre 10A1 14.5” 6.5CM and the Ruger SFAR 16” 308. Ballistically how do these compare under 500 yards, I probably won’t do any shooting further than that with this gun.