My first year hunting with a firearm I went deer hunting near Kane PA with my older brother , his father (sniper/gun smith) and his step mother. Long story short we went with 4 hunter's came home with 3 hunter's and an 8 point. My brother's dad had a heart attack at the same point he dropped a large deer.
So buck fever and a weak heart can kill. But on the bright side he died doing something he loved, though it took the corner 2+hrs. to get to where we were hunting.