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 can’t blame you), a ‘smith can do it fairly quickly. I did the trigger on my hunting buddy’s 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”.)