Shoulder shot is not a good idea with a bow. Shoot just behind the shoulder get a double lung and the deer wont go 50 yds. My buddy shot one one morning perfectly right in the shoulder a complete pass thru. He called me at 8 on the cell and told me to look out for him. About an hour later I see a buck comming and sure enough he has a blood spot right in the center of his left shoulder. I watched him a far as I could. Long story short my friend never found that buck, There was no blood trail by me at all.