Just rework the MKII trigger. No need in getting a Timney for it. Those Ruger triggers can be tuned, to be very nice. I usually drop mine down to around 2.5-3 pounds. I don't know your location, so don't know who to suggest to fine tune that trigger for you... If it were mine, I'd do it myself, but then again, there's a lot of preliminary work I do to the M77 before I even take them to the range.