So what is the best defense caliber anyways? I prefer the .40 S&W. A fast round with a good amount of punch. Not a big fan of the 9mm. I don't mind shooting at paper with a 9 but I don't think I would use one to protect my home. I'm tainted from listening to my grandfathers WWII stories of him hitting japanese in the sholder, arm, etc. and them still coming at him like nothing happend.