Get familiar with as many handgun calibers as you can. This comparison guide should help you as you look to buy your next handgun!
Is this a truly complete list of handgun calibers? No, of course not.
There are no doubt more than a thousand variations if you factor in cartridge designs over the last quarter-century and counting.
If you want to get really deep into the caliber of calibers (see what we did there?), check out Frank Barnes' phenomenally well-researched book, “Cartridges of the World.”
Nonetheless, this is a pretty good place to start.
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