Shot this group yesterday with my AK variant, it is accurate enough at 100 yards and oh yeah it makes a hole twice as big as any .223/5.56.
The key to ask yourself is are you willing to handload ONLY your hunting rounds to get this kind of 7.62x39 accuracy because factory russian plinking ammo aint gonna do it, accuracy wise.
Other things to consider is how you will be shooting at game, I don't care if you got a laser beam gun (i.e. tack driver) if you are standing and shooting then you gotta practice or invest in some shooting sticks.
Oh and lastly, the AK variant costs 400 bucks in a base configuration. How much is an AR?