Just about any Savage rifle will shoot 1/2 MOA with handloads right out the box, regardless of stock. You should easily be able pick up about any rifle from the Savage and shoot under 1 inch at 100 yards. Savage is known for their out of box accuracy.
Onto the accu-stock; IMO it is a waste of money. The accustock fixes a problem with the cheap base model plastic stocks with flex in the forarms, which makes a difference if you are shooting off a bi-pod, but they neglected to fix the biggest problem with the plastic stock, and that is flex in the wrist area on back. I would say the accu-stock would be a good thought if the cost was comparable with the factory plastic stock, (+ or - 25 bucks.) but Savage has priced these gun in the range of their laminate, and high end stocked guns, and the accustock doesn't preform as well as they do. To put it this way, the accu-stock is no where near the quality of a HS precision, or Choate stock.
There are other problems with the accustock as well, many have a dip coating, and my experience, (As well as other I have read.) is the coating easily comes off. The one I had the coating started flaking off in the knurled area of the stock just after a couple of uses. The other problems with the accu-stock guns are they did some slight changes to the receiver of the gun, causing issues if you were to change to an aftermarket stock, and some triggers. The accu stock guns was the side bolt release/cocking indicator removed, and the bolt release is in the trigger guard, and the cocking indicator is in the back of the bolt assembly. With that said if you plan on doing modifications to the rifle you may be better off with a different rifle, that would accept more aftermarket off the shelf parts. The original accustock had some issues with the accu-wedge, which was removed in latter productions. Last the accu-stock are torque sensitive on the action bolts, and many report that there is a torque sequence to utilize to get the guns to shoot well.
IMO the best gun gun in the Savage line up that would fit your application would be the 12 VLP. The 12 VLP has a laminate stock, and is close to the price of many accustock guns. The stock is well designed, and works well. The gun is not available in 6BR, but the combination can be ordered through Savage's custom shop. I would recamend a 223 Remington, just a super accurate good shooting round that gets the job done.
http://www.savagearms.com/firearms/model/12VLP%20DBM