To best kill a squirrel, you deploy a rifle and shoot the tree right beside where the squirrel is perched. That way, the shock of the impact is transmitted through the wood and kills or at least stuns the critter without affecting the food value because it falls undamaged onto the ground. Try that with a shotgun.
As are most of your posts, intentional or not.I have to wonder if there's enough scope there for that shotgun. Please note that this is a joke.