Bats are exceptionally difficult to hit. My success ratio is normally less than 50%. It seem their radar is quick enough to allow them to dodge the shot column unless you are pretty dang close. I know the mathematicians here will no doubt post some far out calculations that prove me wrong, but I have seen them twist and dodge my shot patterns many times and been amazed they could to it. Bats actually do a lot of good, eating various insects, but at times they get overpopulated just like any other wild creature. My favorite bat gun is my B Rizinni 20 gauge O/U with skeet and IC chokes.