yet nobody advocates a 20 ga as a "moose stopper". The 20 ga is .62 caliber, so if a 460 or 500 is so much better than a 357, then why aint a .62 a lot better yet? Projectile wt and velocities are very close, 20 ga slug and super dooper hg, and the 20ga autoloader can get repeat hits 3-4x as fast as anyone can manage with a monster revolver. So why kid yourself about these things? Only brain or spine hits offer the sort of instananeous stop that is needed when something charges you. Having lots of recoil, blast and flash is no help for trying to hit the brain of a charging critter, especially with a handgun, and without ear protection.