While messing with the springs can certainly lighten up the trigger pull on a M77/22 or even a M77 centerfire for that matter, work done to the sear is going to reduce the creep. If you want a truly good trigger out of your Ruger you need to address both, my .02 on the matter anyway. And if you go that far then you might as well place some sort of over travel in place too and be totally happy.
