the biggest difference between is movable parts. both are very accurate. but w/ a-bolt you have less moving parts which gives you the advantage of not having a lock up or jam of ammo. I have both auto and a-bolt and use them both w/ no question. and have killed lots of deer w/ my .308 auto. thats why the military snipers use bolts . less chance of a foul up. but its your choice. good luck!!