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The '''10mm Auto''' (10x25mm) is a cartridge for semi-automatic pistols, developed by firearms visionary Jeff Cooper and originally produced by ammunition manufacturer FFV Norma AB of Åmotfors, Sweden.

<!--The '''10mm Auto''' (10x25mm) is a cartridge for semi-automatic pistols, developed by firearms visionary Jeff Cooper and originally produced by ammunition manufacturer FFV Norma AB of Åmotfors, Sweden.

It was originally introduced in 1983 for the Bren Ten pistol, of ''Magnum PI'' fame.  That pistol was later followed by the Colt Dela Elite.

It was originally introduced in 1983 for the Bren Ten pistol, of ''Magnum PI'' fame.  That pistol was later followed by the Colt Dela Elite.