Ok since I'm going to VC i will tell yall and not make ya wait the whole weekend. It depends on the side he predominantly sleeps on. Theory is when in velvet and the deer is napping he lays his head on the ground and rests one side of his rack on the ground. Even wgen curled up one side is on the ground one side is against his back. Laying with his head straight out he rests one side on the ground. But it's the side on the ground that grows larger.. Blood flow to the antlers is heavy during formation. Having one antler lower than the other will cause the lower one to get better blood flow, while the higher one has less flow. Hence the higher one grows smaller due to less circulation. It's a theory anyway, not scientific fact. I say it's like a woman's boob. One always grows larger. Not because of the side she sleeps on but by which side dominant she is. While it would be impossible to tell which hoof dominant a buck is; body dominance is just another theory. But would also make sense.