dancoman
The older Ruger M77 triggers were adjustable, the newer M77 MKII triggers are not. But both are very easy to clean up. A Dremel tool and Cratex polishing wheels (not grinding) are a good place to start. If you are not comfortable doing it yourself (for which I cant blame you), a smith can do it fairly quickly. I did the trigger on my hunting buddys M77 MKII a couple weeks ago and it took all of about 15 minutes. Came out very nice crisp and clean, no creep. (I did grind some on this one, reduced the contact from 0.300 to 0.018.)