well if u hit the deer where the neck meets the chest , dead center , id think you woulda got some of that juggular vien sorry about the spelling , or the wind pipe , or somethin , spine? and he would have been down within 300 yards. Maybe not however , ive seen neckshots that just simply go under the spine and behind all the vital stuff in the neck and the deer live for ever! my uncle hit a buck in the neck one year , like i said between the vital areas , and 2 yrs later ended up gettin him in gun season. when we skinned him out we found the piece of aluminum arrow through his neck , the exact arrows my uncle has shot for about 10 years now!!! i have also done about a half dozen deer with pieces of arrow in them , those buggers are hardy animals!!!!

But you mighta got him to stiffen up and get a fever and die if u waited overnight. on any marginal hit i like to use stan potts old saying " when in doubt , back out"