I frequently encounter the terms ACP and Parabellum with respect to ammunition. I assume these are terms like Springfield, Winchester, WSM and others that follow the applicable ammunition. If not, maybe someone could enlighten me. Thanks

Yes, you are right. ACP means "Automatic Colt Pistol", and is a term generally applied in the U.S. to ammunition designed to be fired in one of the Colt-made versions of a Jonathan Browning designed pistol, (most often the .45). Such calibers were often called "Browning" when made in Europe. The term "parabellum" is a Latin phrase meaning "for war", and was applied to the 9mm ammunition intended for use in the German P '08, the 9mm military caliber Luger pistol adopted by Germany in 1908. To the best of my knowledge, this term was never applied to any other cartridge.

Keep yore powder dry!!

i thouroughly agree with eldeguello.

propmahn
save the world, reload your brass