An important consideration concerning accuracy is that the model 12's come in two flavors. The lower grade is a small shank action with open top and is comparable dimensionally to the model 10. Available in right and left bolt, it can be the basis of a fairly accurate build, or shoot well right out of the box. The 12FV is a favorite for low cost, excellent accuracy in stock form and easily upgradable with aftermarket barrels and stocks for extreme accuracy. The 12FV's typically come with a varmint accutrigger adjustable down to 1.5 lbs. The model 10's have the standard accutrigger adjustable down to 2.5 lbs as I recall. Both can be modified to break at lower weights.

The model 12 target is a large shank action, small port that's available in right port, right bolt, right eject or left port, right bolt, right eject. I'm not sure if it's available in a left bolt also, but both actions by themselves are available at Northland shooter supply should you desire to build a custom rifle.