It seems now a days, everyone wants penetration, penetration, penetration, with a bullet that completely holds together. But if you look at all the on the street "proven" rounds for the past many years, the best ones are the ones that fragment. AKA: 9mm federal 115 +P+ and the 357 magnum federal 125jhp. Both these rounds worked fantastically for law enforcement, but everyone wants more penetration since the FBI says so. I'll take the real life street proven rounds over what the FBI "says" are better.