if your hunting hogs and doing a lot of walking I would not go with the 308. Most weigh in the 10 to 11lb range (without a red dot or scope) and that is too heavy to be toteing around the woods all day. If you are stand hunting then the 308 would be fine IMO. I would look at the 30 remington that they are chambering in their AR's (by DPMS) I have been doing a lot of reading on this round and it looks like it will be a good Deer round and being that remington is loading it, It will not be high priced like some of the custom loads and it will work in a Standard AR mag with a slight mod to the feed lips. you can also get a 7.62x39 upper for your ar and there are several hunting loads available for that along with cheap plinking ammo.
"A free people ought to be armed" George Washington 1790
‘For those who would give up essential liberty to purchase a little temporary safety, deserve neither Liberty nor safety.’ —Ben Franklin.”