No offense intended, but antler size shouldn' t dictate what is or is not a proper shot for a person to take.
Well put JRW, antlers or not, a shot is either ethical or not, there is no difference in ethics between a 180 class buck and a doe. I have no problem at all on practicing on a moving target, and to be honest I have seen some people who taking a shot at a running deer would be ethical, but not me or 95% of other bow hunters.