Last year I shot a 150+ class buck with a 243 - lung shot - I could tell because of the blood color - The buck crossed a fence and hit the ground - I went back to the barn for 1 hour at least - as I made my way back to the fence I believe he jumped - I could see a deer run off! Not sure if it was the one I shot - I went to the fence were the deer flipped over - Huge pile of blood but no deer - I track him for at least 100 yards - the blood trial went dry - after 2 more hours of circling the spot - I found him near a log trail in the wood some 100 yards were the blood trail ended - I counsider myself very lucky to recover such a fine animal - that deer your talking about if the lung shot was on target and there is a lot of blood present should be hip deep into some huge cover! I was sick about this deer until I saw rack above the weeds - never give up - the blood trial was reduced to a trickle - I mean pin size blood drops and then nothing - what gave me hope was the amount of blood lost at the fence! Look for cover!