Your friend sent you an email that swears (x) is the best for self-defense, you read them in forums, and the comments section of articles, and YouTube videos are full of them. The stories about what a certain caliber or cartridge can or can't do, why this caliber is better than the rest, and more. These (ballistic myths) including, is birdshot is a good self-defense load, and which ammo will penetrate walls, are all examined on the range with this week.