OK I' ll open up a can of worms here. Down here we' ve shot lots of running deer. When you have a pack of walkers on them they don' t stand around long. Buckshot works real well on them. But whether rifle or buckshot keep your shots in range. If a running deer is far enough out that you have to worry about bullit drop, he' s too far to shoot at. OK now let the dog bashing begin.