Last spring my wife and I killed 60-70 prairie dogs in a 8-10 acre pasture in a three hour shoot. She was shooting Stingers out of a 22 auto and taking the ones under 100 yards, I was using my Savage .17 HMR and taking the shots 100-200 yards out. No pictures, but I took the head clean off one at 150 yards.
I regularly kill about 20 rock squirrels from my porch every summer since I got my 17. Most shots are about 70 yards, haven't lost one yet.