If you can give up a small perceived ballistic advantage and in exchange, get the ability shoot the gun better, that's a worthwhile trade-off. But even so, I don’t usually recommend a 20 gauge shotgun over a 12 gauge for home defense. And not because it isn't powerful enough. It has a lot more to do with the lack of industry support for the 20 gauge. The shotguns you can buy today that are set up for self-defense are almost all based on shotguns used by law enforcement and the military. For the last century or more, almost 100% of...