I bought a MkII in .308 with the standard barrel contour and have really enjoyed it. I live in the Southeast where if you touch a carbon steel weapon and put it back without wiping it down, you find rust and pitting the next time you bring it out. The stainless steel simply lets me enjoy the rifle more. On the down side, the action isn't as smooth as my old liberty model 77 in blue steel and the long action, but that might not be as noticeable with a little more use and wear. I'm thinking of buying some lapping compound and smoothing up the action. Another reason the action doesn't feel as smooth might the Mark II safety, which includes a lever that drags on the bolt. But I really feel more confident with the more positive Mark II safety. I like it a lot.
The trigger pull is non-adjustable on the Mark II, and a little heavy for precision work, but for hunting or tactical use it is fine. Several makers advertise after-market adjustable triggers for the Mark II in Rifle and Handloader magazines.
I haven't benched my Mark II yet, and I'm not a trained benchrest shooter, so I really can't tell you much about accuracy. I do know I tend to hit what I'm aiming at. My favorite pastime with this rifle is 300-400 yard shooting at a large kaolin mine. I can hit torso and head size targets fairly easily with a rest or in prone position. I have a 1.5-5x Leupold Vari-X III mounted on it. Instead of a bipod, I made a "field expedient" tripod by lashing three 1/2" hardwood sticks together with strong rubber bands. The sticks are about 16 in. long and are lashed together about 4 in. from one end. I set up the tripod, adjust for heigth by moving the legs closer together or farther apart and drop the foreend in between two of the three sticks. Solid as a rock.
I hate the looks of the All Weather stock, but it feels great. One day I may bed it in a Brown Precision fiberglass stock.