The first one was with a .22 LR at a tom running full force across an open field at about 30 yards. When I pulled the trigger he folded up and never took another step. But, I used to practice alot back then. The other couple of birds were all with a .22 WMR. I used HP bullets and never shot past 60 yards. I did hit one hen a little far back, but she only went about 40 yards before I got to her. The rest were clean kills.