I voted No! It's not possible for a hunter to follow the rules of safe gun handling and mistake a horse with rider as a deer.
But it does happen. Call it "buck fever", call it anxiety, call it gross stupidity or even attempted murder, but it does happen. Some people in the woods with gun are NOT HUNTERS. They just want to shoot something and they do.
I couldn't agree more!
"When in doubt [use] C4." -Jamie Hyneman (Mythbusters)