In the January 2003 issue of "Deer and Deer Hunting", there's a picture of this, and it says, "Parasites thrive easily on easily accessible food. That's why it's not unusual for a buck's antlers to become the host of warbles (aka Bot Fly) that bore small holes into velvet antlers. These holes are even more evident after the velvet dries and the antler hardens."

Smitty, I think you're wrong.