i am a very ethical hunter, I killed my buck this year right through the chest/shoulder the arrow penetrated about 12 inches and the deer collapsed within 60 yards. Most people would claim that also to be a bad shot but if its a close shot, trust your equipment, and if you have enough bow to get through the bone it will do the trick. I have also seen perfectly shot deer not go down for several hundred yards with lung hits, and havelittle blood trail.I just think its pretty much a crap shoot either way. There are way to many variables for any one answer, in my opinion no one will ever be able to answer that question and make everyone agree