Their are about a dozen different scenario's that could cause this Schultzy... but I'll keep this post to a minimum.
Whitetail fawns are born at many different times throughout middle of spring and into early summer. This ensures the species to survive.
When a whitetail sheds his antler.. lets say on the 3rd of March... that same buck will generally (as long as he has health) shed his bone every year for the rest of his life within a few days of that March 3rd date... and then begin growing them right after... again about the same date for that individual.
Even more interesting... an individual buck will even shed his velvet every year about the same date... yr. in and yr. out. (although different biologists record slightly different results.)
So... it is just most likely that the young buck will always have an early shed date.. followed by a early re-growth start date... and ultimately an earlier velvet shedding date. (most likely)
The bigger buck probably has a late shed date... thus an later start to his re-growth.. and even his velvet shedding.
Neat stuff to witness... now maybe you can use this to your advantage while sheddin' next season.
Of course this is all under normal health conditions. (For you RockinChair)