I have had to dispatch many, many, critters over the years. Anything over a 22 LR can be messy. I can also tell you that it is best to use a rifle over a hand gun, IMO. The x method works and must be used on swine. I have found however, that many critters turn their head to the side when you point a gun at them point blank. That is when a shot in or right behind the ear, becomes a good option. This method also works well if you put some food down so they can be distracted. Call me a wuss, but I find it hard to dispatch an animal that is making eye contact. One if life's most unpleasant tasks.