RE: shot placement on hogs
If you're bow hunting, you would probably want to aim for just behind the shoulder and then take your chances tracking them. If you're hunting with a rifle, you can opt for the head shot if you're close enough to be comfortable with the shot. Me personally, I would take a broadside shot centered on the shoulder. That way you will blow out both shoulders and that hog ain't going anywhere.... that is if you are using a strong enough bullet to retain it's energy and weight while going through all that bone.