You are right, the private property does generally hold the bigger deer, but there are still some dandies on the public land. I'd do what was mentioned above, hunt the public land near the private and you may be able to catch the bucks crossing over. (Be sure you have a landowner map though, because we have been in several pissing matches with angry ranch hands wanting to know why we were on their property). After pulling the maps out and showing them exactly where we were, they realized that what we knew all along, we weren't on their property...in fact, I'm sure they knew that too, just trying to run us off.