RE: why hasn't all Pa gone shotgun only
Trust me...you don't want to go to shotgun only for deer.
Shotguns have nothing to do with bigger deer in Ohio, or anywhere else. How could they? You can still shoot 125 yards, and I'm willing to bet ya that 95% of the deer taken in PA are in that range.
Also, until you have 60% of your land in corn, soy beans or alfalfa...you won't have deer as big as the midwestern states.