Back when I was much younger and wanted to be ready for anything in season I carried a Ruger single-six loaded with CCI "shot" while deer hunting.This was before I learned that one must always first pattern one's shotgun, however small.
While on a stand I saw a partridge land on a limb about 30' in front of me. I laid down the rifle, placed the Ruger in both hands, rested my forearms over my knees, drew a careful and fine bead, squeeeeezed the trigger and fired.
The damn grouse sniffed, fluttered its wings a little...and after thinking about it some, flew off!
Best wishes, Harold