I own only one A-bolt, a stainless steel Stalker-II in 7-08. I bought it for hunting, and in that capacity, it has served me well. (I have carried it for only one season, however.) I've put less than 50 rounds through it so I can't really speak to its durability. It has been quite accurate at the range and is easily capable of sub-minute of angle groups at 100 yds.--if I allow time for cooling between rounds. The trigger breaks right at four pounds and came that way out of the box.
Subjectively, I really like this rifle. It is light, points quickly, has a reasonably smooth action, and is fun to shoot. The next few seasons will tell how durable it is, but for now, I am quite pleased. For hunting, I would rank it above either of the Ruger 77's or several Rem 700's that I have or have had.