Anyone that follows Rob Leatham, who is known for his pistol shooting prowess knows about his "the Walk Back Challenge" drill. Basically the drill starts at the 50 yard take a shot with your pistol, if you hit the full size steel target. Proceed to the 100 yard, you keep repeating this drill until you've reached a distance where you miss the target. Normally this is around the 200 to 250 yard range. In this demonstration Larry Vicker using a Glock 20 which shoots a 10mm, the power is between a .357 and 41 Magnum. This pistol is ideal not...