Deciding on the caliber of your self-defense or concealed carry handgun can be a challenging task if you haven't done your research. Although there are many options on the market like 10mm Auto and 357 SIG, the three most popular pistol calibers are 9mm Luger, 40 S&W, and 45 ACP. It's not an insignificant choice, as anyone purchasing a handgun wants the best caliber for personal defense since this is what most pistols and revolvers are used for. Sadly, there is a lot of misinformation about the effectiveness of handgun ammo that might sway a new gun owner into a caliber that they end up hating. This is where we come in! Let's separate fact from fiction concerning stopping power for the Great Trifecta of self-defense handgun cartridges. Spoiler Alert: The ideal caliber is the one you shoot best. Therefore, when you are ready to drop your Benjamins on a new EDC handgun, whether it be a Glock 17, Springfield XD, Sig Sauer P226, or Colt 1911, you'll be confident that you have the best self-defense sidearm on your hip. The question comes down to magazine capacity vs stopping power. Stopping power is a bit of a dirty word on the podcast as it is something that is completely unquantifiable. However, the bullet diameter of a 45 is significantly larger than a 40 than a 9mm. That being said, the person who brings the most bullets to the fight often wins a prolonged engagement. The 9mm also has the added bonus of having light recoil, which is a lot easier for small framed shooters to handle. This is one reason why so many law enforcement agencies are switching back to the 9mm from the 40 S&W. Your choice of personal defense handgun cartridge lies deeply in what you prefer and your abilities as a shooter. Many CCW permit holders prefer 9mm for the mag capacity and lower recoil in a subcompact, but there are others who have no problem carrying a 1911 on their hip all day. It all just depends on what you like to carry and what you are comfortable EDC'ing all day long.