In Texas, there are certain counties that allow only one buck to be taken and some allow up to 3. A large number of counties that have always been one buck counties went the the antler restriction rule where you can take two bucks where one has to be at least 13" inside spread and the other has to have at least one unbranched antler. All of the places I hunt have gone to this rule. I beleive the Texas parks and wildlife can also issue extra permits for bucks and does on certain kinds of land after taking a census of the number of deer there and that is where you are seeing more deer being taken.