I have never been a fan of the neck shot on big game. To much chance of a wounding shot. Unless you hit the spine, or sever major blood vessels, I think the chest (lung/heart) shot is best. If forced to take a neck shot, I would try to visualize where the spine was, and aim accordingly.. Years ago, I witnessed a friend shoot a doe in the neck with a 20ga slug, from about 15 yards. She ran and ran and ran, and we did not find her. For all I know, she survived.
Larry