I put a Timney in my Savage 111, and it was like going from my 870s stock trigger (gritty heavy crap shotgun trigger) to my snubbies single action pull. I don't think I'll every have another rifle without an aftermarket trigger, it is amazing.
I don't know about the Ruger version, but mine I adjusted sear engagement to BARELY hold it, adjusted the pull weight down to (insert below safe here) then bumped it back up a smidge, then adjusted overtravel. The instructions are on a little teenie paper, really my only complaint, but it's easy enough. When I was done, I slammed it around for a while, safety on, safety on/bolt free, and safety off, and found IF I slammed it pretty damn hard, and IF the safety was off, and IF it impacted toward the top of the buttplate, it would go off. I fixed it by allowing more overtravel, not much, but some. I ended up with a very light trigger, crisp and lovely, and I can fire between heartbeats without any effort, I just think about it and the round goes.