Well I can tell y'all that for double damned sure there aren't any 300 plus pound deer in Florida that haven't been raised inside a high fence... LOL
I also hunt south Georgia and the game processors periodically mention 300 pound bucks being brought in but that's a freak occurance and there is always speculation that they spent their lives eating a lot of corn and peanuts of which there are many places they can do exactly that around.
I was raised in Southern Illinois and can testify to seeing some huge bucks there but I don't think I've ever seen one that would go 300. I've probably seen a few that would easily top 250 though. The farm I was raised on was my grandfather's farm and he didn't allow deer hunting on the farm so it was somewhat of a sanctuary and we almost always had some pretty big bucks that often had some pretty impressive hat racks.
Bob