So I am posting this to let other people know of my folly. Hopefully you will learn this and not get the pissed pulled outa ya like I did. 9mm Short is .380 ACP.

I was told by a guy that he shoots 9mm Short. I asked if he reload or bought his ammo. He said he bought it. I said I had never seen that caliber. He told me it was very common and cambered in lots of pistols. This went on for a long time before he eventually told me 9mm short is another name for .380 ACP. So now you know and knowing is half the battle!