A very small percentage of people continue to insist that bird shot is adequate for defense. Although they have no evidence to support their claims.
Sir, please look in the link you yourself posted at the #5 birdshot. I'm skeptical about how far away the barrel was from the gelatin in order to make a wound channel over four inches wide, but either way, that's a recipe for death. Almost all of the pellets penetrated 7-9 inches.