It took all of a couple minutes to do my new MKII 77. Just had to cut about two coils off the spring, stretch it slightly and it was the most crispest breaking trigger I ever did see on a ruger, better than my rifle basix m77 trigger on my 77/22.
Brownells offers a reduced power spring that fits perfect also, it needs about 1 turn of the coil removed to be just right. You can either get just the spring or a little tune up kit, that comes with a stronger firing pin spring for faster primer strike I guess.
