While I don't shoot a 9mm (yet!), I have been picking up brass at the range. While sorting out other brass to give to a co-worker, I noticed three different markings on the 9mm cases - 9mm luger, 9mm parabellum, and 9 x 19.
Are these different versions of the same ammunition or are there real differences?
Are these different versions of the same ammunition or are there real differences?