Look at the record books to see where the biggest bucks are taken. Most are around agricultural areas in the upper midwest. Texas has big bucks, but they are also on larger ranches than what you see in the midwest where controlling the deer herd is easier for the ranch owner. I think if you are looking for the highest percentage of big bucks you head to the midwest on up to canada. As for body size, the further north the bigger the body. Texas racks look bigger because they are on smaller bodies.