I remember reading as a kid a story in F&S or Outdoor Life, about a hunter who was on Safari and spent the night atop a raised platform out on the veld. During the night he was awakened by an elephant rubbing against one of the platform poles. He had a 22 rifle along with him, I suppose form shooting birds and he fired a rounddown through the thatched floor of the platform hoping to scare away the beast. As soon as he did this it got quite and he soon fell back to sleep. When he awoke in the morning he was astounded to find a dead elephant laying under his platform. Supposedly the bullet went through the top of his head hitting the brain.