10/22 accuracy is a whole different ball game, when you really dig into it. I have a "INCH" lb. torque wrench, NOT FOOT lb, and I torque the barrel screw the exact each time. It took a while at the range to see what was the best setting, (inch lbs wise) for best accuracy. It's like tuning the harmonics of the barrel. Some stocks have a "Bump" down the barrel that is used with the barrel action screw to "Tune" the barrel to. Some people bed the barrel, and free float the action on those. I also "Pinned" the action with the front trigger control pin thru the stock, to keep the action the same. (It's a whole different process) There are a few .22 forums where this is given in good detail. ("Rimfire Central.com" was one, I think) Tactical Solutions (out of Idaho?) have some excellent Ruger after market parts too, as well as their own guns. Volquartson used to make damn good stuff too. I have an "Adams and Bennet" on mine, but it is the only one I have ever had in .920.
Good luck with the project. They are a lot of cheep fun.