I read a lot of gun magazines and shoot a lot of targets. I've tried all calibers and of course love my .45 acp best, figuring that it has the most knock down power. Foiled again. I watched "The Best Defense" on TV today (Outdoor Channel) and one of the demonstrations done was to test how safe it is to take shelter beyond a bookcase with few books. They shot a .38, 9mm, .40 S&W, and .45. The .38 went through two paperbacks and lodged in a third. The .40 went though two books and pushed more books away, but did not penetrate the third. The .45 didn't make it through the first book, though it pushed the books hard. The 9mm went through 5 books and lodged in the oposite side wall of the case. Nine mil really is strong!
Dave
Dave