I noticed mature bucks will shed earlier than subordinate bucks. It has to alot with the amount of stress the buck endures during the rut. I hear some stories of bigger bucks rutting hard for the first two weeks in November and fall into post rut by December. By the end of December their hormones are burned out and shedding occurs. This is just what I noticed from other hunter`s observations.
I only hunt on days that end in ' Y '.