If you don't mind paying $250.00 for a day of tossing lead at chucks, Mansfield is the place for you. You'll be driven around to hundreds of farms and have your chance to shoot many. If you want 800 yard shots, Mike will take you directly to fields that will offer such a shot. Here's the link...
North Central Ohio Varmint Express
2 people, $500.00 total. A friend went and had the time of his life, I called last year but he's booked up already :(
Any caliber is welcomed including .50
Price seems steep, but as we Ohioans know, opportunities for anything long range in this state suck so sometimes ya just gotta pay to play.