Clem is correct, growing big antlers is a 3 legged stool.
100% truth. And IMO, the longest leg on that stool, in Alabama, is age. Genetics and food definitely play a big part, but when you consistently kill 95% of your best bucks, as 1, 2, and 3 yr olds, it becomes awful hard to see what those good genes and good food can actually produce.