Our group always went with, if the shot would have made it hard for the deer to survive from then that person gets the deer. Example if it is through the body cavity, takes a leg out, or ect. If it is a minor wound then the person killing it gets the deer. The only argument we have had with that is when a minor wound bleeds and allows the group to track using the blood when they may not have got the animal otherwise. The arguments usually only happen over the antlers because we share all the meat with the whole group.