If I were wanting a big bull specifically for the wall I would certainly wait until winter or late fall to take one. They hides are much thicker and nicer looking.
I will say a late winter hunt in Wyoming is not for faint of heart. It will be bitter cold and quite snowy in most areas, wild / free range or ranch hunt.
Hunt before Jan. for better conditions.
These 2 cows were taken in January hunts on the National Elk Refuge, Wyoming state tags.
The hides are thick beautiful. Bulls taken at that time would be nice shoulder mounts. We opted for full tanned hides on both.
I would inquire of the gentleman on here with bulls for sale, how much to add a few extra months of grass feed for a December harvest ? If you want big and wooly, or this time of the year for a classic looking short hair mount.
Top 2 pics are a 6 1/2 year old cow, bottom pic was a 4 1/2 year old cow. Both aged and processed ourselves except for the burger. Excellent meat.