Hmm. I've hunted in Pennsylvania and found that a "big 6-point" there is what hunters in many other states would consider a medium-size deer, probably a 2-1/2-year-old buck. This is confirmed by the fact that the deer saw you, yet circled close enough for a shot. My guess is that he'd come back again, maybe even the next day. A really mature buck would have been gone in a flash and probably wouldn't return to his scrapes except at night.