I've poked holes in several groundhogs with it out to 100 yds. They die P.D.Q.
Once many years ago, I was turkey hunting in N. central PA with my old Savage-Stevens 24P, .22wmr/20 ga. O/U, when I set up to start calling, a chipmunk on a stump saw me and started chirping & chirping & chirping. Finally, I had had enough and I shot that little alarmist with a .22 wmr HP at roughly 30 yards. It turned that little mountain rat inside out!