The most common definition of “caliber,” as it pertains to guns, is about as straightforward as you could want it to be: Caliber simply mean the diameter of the hole in a rifle or pistol barrel. Yet ...

Some calibers are everywhere for a reason. They’re common, they’re affordable enough to keep factories running, and they fit a lot of guns that sell in big numbers. The problem is that “easy to find” ...

Pistol-caliber talk gets dumb fast because most people argue it like a bumper sticker. “Bigger is better.” “Shot placement is everything.” “Nine is enough.” All of that can be true in the right ...