I know this post is late by a few years but for future uses I have 9mms, a Sig P229 .40/.357 Sig, and a .45 ACP. I have done research and my own tests. The .357 Sig round is perfect for having to shoot through obsticales such as cars. I use Winchester 125 Grain FMJs as my concealed carry choice. It's clean burning and accurate. You wouldn't think you would have to shoot through a car to hit someone but even as a civilian the possibility is there. I carry this gun for the purpose of if I hit someone the round will not overpenetrate however will go through obstacles. For home defense I use a 12 gauge shotgun and a Judge with .410 cause they will not overpenetrate walls unless slugs are used or if just really close to a wall. For outside the home I carry the Sig P229 .357 Sig. There are reasons Federal Law Enforcement and Texas State Troopers carry it and for those reasons I also carry it.