I have a Winchester Model 61 pump action in .22WMR that I've used on everything from squirrels to yotes! This rifle happens to love the Winchester Super-X 40gr. JHP loads (product# X22MH), grouping a hair under an inch at 100yds, so that's the only load I ever use. Shoot your edible game in the head and there's no lost meat. Gophers, woodchucks, foxes and yotes (out to 75yds) all seems to expire in a timely fashion when being hit with this bullet as well. I say go for it, buy that 77/22...you won't have any regrets!