It's a good shooter; I've fired over 400 rounds and it hits point of aim at 10 meters with no adjustments. I had to tighten the hammer tension screw because it was about a full turn from fully tight when I first fired it. After I fully tightened the tension screw, I was still getting light strikes on my reloads (about 1 in 10) that had CCI primers. I recently switched to Federals and that seems to have corrected the light strike issue. The action is ok. I wouldn't say that it is dramatically better than my 686-6 and it isn't as smooth as my 586-2. The DA/SA pull is 10 lbs/4 lbs.
I know the uneven ribbing (and some other machine marks and surface imperfections that I didn't mention) is a minor quibble, but I just expected better level of finishing at this price point. The 686-6 that I bought at the same time actually seems to have a cleaner exterior finish.