I bought the Dayton trigger and was not impressed with it. First, I had to grind the small metal pad on the trigger where the safety rested, so that I can work the safety lever. Then I tested it on the field, trigger breaked too quickly and it wasn't very smooth. I was getting better groups with the factory trigger.
I recommend you buy the Volquartsen 77/22 Target Sear, this is all you need to lighten the trigger and get a smoother, cleaner break. You can get it for $27, free shipping, at
http://www.ontargetguns.com
BTW, installing the trigger on a 77/22 takes about 2 mins. just pop the pin and change...