There is a dead spot and I do know first hand! I shot a 6pt buck with my bow just above the lungs and below the spine and it ran off, I tracked forever looking for this deer, a month or so later I shot the same deer with my shotgun (or shot at, I did not find a hole in him) and he was so weak that he went down and went into some type of seizure and knocked both his antlers off. The area where I had shot him with my bow was bad, green meat!