In a wild deer herd there is no such thing as a cull buck. First, you don't know if that buck will catch up and express his full potential with a giant rack once he hits 4-5 years old. Secondly if he's a successful breeder the doe is also half the DNA. All of us have seen beautiful daughters come from two homely looking parents. If you just want one less mouth on a marginal landscape then that might be the only reason to take him out of the herd. The king ranch did a study on allowing 10 point bucks to walk and killing 8 point bucks. After several years there were no more 10 pointers than on another property with no selective harvest. If you want to kill him then go ahead but you won't change the genetics of the herd.