Right now I just have a Leupold VX Freedom 3-9x40 on it because it was free. Not digging the thickness of the duplex reticle though. With my less than stellar eyesight at 100 yards the crosshairs nearly cover a 1" dot, so a 1" group I feel is pretty good. Good enough for deer hunting out to 300 yds anyway. I'd like to put a better optic on it for next year though.
I've only had the one day to shoot it, but I like it so far. I really wanted the Tikka T3X, but the extra little bit of stock length just made it feel a bit like I was stretching. It would be nice if the X-Bolt HC was stainless though. The ring mount holes on the receiver made me nervous becuase of all the stories you see about them stripping out, but I used some VC3 threadlocker and Talley's set to 18 inlbs without any issues. I was only able to shoot 1" groups at best with it, but I didn't have a proper rest at all and like I said above, the scope is not the best IMO.
