RE: Neck shot
My wife shot her buck this year in the neck. Hit a limb, arrow deflected, right through the jugular. She called me crying she was so ashamed of the shot. I have NEVER seen blood like that in my life, spraying 5 feet out each side, he didn't make it far.
Definitely not a shot to take, the jugular is a big vein...but REALLY small to think you could hit it on purpose. Not a shot to take intentionally, ever with a bow.