All of my previous comments have been in reference to the southern half of the US, where we don't get winter kill and overpopulation is the biggest problem that managers have to deal with, in most cases. In the two Nawthun states I've hunted, Iowa and North Dakota, I've seen more and bigger bucks on "unmanaged" public land than on any managed property I've hunted in the South. If you already have quality deer, you obviously don't need QDM. Severe northern winters take care of the excess population and favor the biggest and strongest animals, i.e. big bucks. That, plus short gun seasons, keeps the deer herd closer to the natural balance that existed before humans wiped out the other competing predators. Down South we have to shoot, shoot, shoot those does and allow the young bucks to walk to approach the same type of balance.
Mississippi just changed the legal buck restrictions so that practically all of the yearlings, the 1 1/2 year old bucks, will be protected. A buck in most of the state has to have a minimum 10" inside spread or a main beam length of 13" to be legal. In the fertile delta region, it's 12" inside or 15" beam. With our late rut, nearly all yearling bucks are smaller than this. It has apparently been done to increase the average age of bucks, and encourage the shooting of more does instead of small bucks for meat. Buttons will still be legal as antlerless deer.
Off the subject (again), but the overpopulation problems in some areas of the state have created another issue that will be catastrophic for bowhunters if the current well-founded rumors are true. It now appears that next year we may have no separate seasons for bows or primitive weapons. There is a strong push to open deer season on Oct. 1 and keep it open until Jan. 31, with all legal weapons allowed all of the time. That's what can happen when doe populations are allowed to get out of hand!! For us bowhunters, it means that we won't have the opportunity to hunt unpressured bucks (or does) before the gun hunters turn them nocturnal. I would hate to be in the sporting goods business in this state now, because if this happens they will have great difficulty selling off their inventories of primitive weapons to the majority of hunters who just want to shoot a deer by whatever means is legal at the time, and are not dedicated to bowhunting like most of us are.