10mm Auto is a powerful centerfire semi-automatic pistol cartridge used for self-defense, handgun hunting, and as a backup against larger animals.

10mm Auto delivers notably more power than common service pistol cartridges like 9mm or .45 ACP, with correspondingly stronger recoil. It is used for self-defense, handgun hunting of medium game, and as a trail or bear-country sidearm cartridge, and loads vary widely from milder to very stout. Ammunition is available but typically more expensive and less universally stocked than 9mm. It suits experienced handgun shooters who want maximum semi-auto pistol power and can manage heavier recoil.

General information about this caliber — not a recommendation for this specific firearm.