So I received my ammo order from a few days ago. What I did not divulge was I had added on some .380 ammo to the order since it was at a great price. When the boxes arrived they were marked “9mm BROWNING COURT / .380 AUTO.” I immediately took a cartridge and compared it to some of my dummy ammo and it was of course the same.

I figured it was time to try to learn something so what I found was what we commonly refer to as .380 Auto or .380 ACP is actually 9 x 17mm developed in 1908 by John Browning for the Colt Automatic and originally called .380 ACP (Automatic Colt Pistol). No the “Court” label on the box is French for “short.” By contrast the popular 9mm Luger is actually a 9 x 19mm and of course the Makarov is 9 x 18mm. If you want to be sure you are getting .380 Auto look for 9x17mm Browning, 9x17mm Browning Short, .380 ACP, .380 Auto, 9×17 Browning, 9mm Browning Short, 9mm Short, 9mm Kurz, and 9mm Court since the package may be labeled differently depending upon the country of origin.

So don’t fret if you order some .380 Auto ammo and get some 9mm Browning Court, you got what you ordered, just with a nickname.

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