Iron Foil Beret
Hmm, this experiment did not reproduce all the conditions of the event (ie. they used a different shotgun instead). Here's another experiment, confirmed by an engineer and a police officer, that concluded that Cheney shot at a distance of 15 feet, not 30.
Not that there is any reason to suspect that this was anything but an accident, but apparently Cheney was under the effect of alcohol when he went hunting.