9mm Browningĩmm Browning was developed in 1908 for the Browning 1908 Hammerless pistol. There are a few other variants of 9mm ammo that you might come across on store shelves, so we want to briefly touch on these so you have an idea of what you’re looking at when you see them at your local gun store. Anything made in the last 50 years or so is going to be perfectly fine with 9mm NATO though, so don’t worry about any gun made after the end of the Nixon administration. If you have an antique, don’t feed it 9mm NATO without doing your research first. The only thing to keep in mind is that some historic models of firearms chambered for the original 9mm Parabellum/Luger might not handle the increased pressure of the hotter 9mm NATO rounds. The difference is on the inside, and in the allowed pressure differences.īasically, with 9mm NATO, you get a slightly higher chamber pressure, which translates into maybe 100fps more velocity and a negligible amount of extra recoil you won’t even notice unless you fire the two rounds side by side. The cartridge length, case diameter, bullet diameter, and every other single external characteristic are exactly the same between 9mm NATO and the Luger/Parabellum. So, the decision was made to standardize a 124gr bullet with a little more powder and pressure behind it in order to get some more power out of the round. Namely, the round was a little underpowered and failed to cycle some dirty open-bolt submachine guns like the Sten reliably. 9mm NATO: The Newer, Spicier VersionĪs time went on, and most Western militaries began to adopt 9mm Luger/Parabellum as their handgun and sub-machinegun round of choice, they decided that the standard off-the-rack ammo wasn’t quite up to military spec. Anything you buy that says 9mm Luger or 9mm Parabellum will meet the exact same specifications and will work in any gun that says 9x19mm on the barrel. ![]() The good news is, despite the different names, the specifications are exactly the same. This of course created much confusion and is the reason for this article. Luger, and also because that’s what most Americans already knew it as. So to eliminate the issue, they named the standardized round 9mm Luger to both honor the creator, Mr. Namely, for legal reasons, they didn’t want to standardize the cartridge in the US as the 9mm Parabellum in order to avoid any chance of a trademark issue. Years later, as the round was becoming standardized by the Sporting Arms and Ammunition Manufacturer’s Institute (SAAMI), the US-based organization that standardizes firearm cartridges so everyone can make and use ammo that has the same dimensions and pressures, caused some problems. 9mm Luger: The Name Change for Legal Reasons Just to help make things a little more confusing, he then created the P08 Luger pistol to fire the 9mm Parabellum, and as it was used in both World Wars by German forces, American GI’s started calling the gun the 9mm Luger, which they then started applying to the ammo as well. Back in 1901, Austrian gunsmith Georg Luger designed a round while working at the German arms manufacturer Deutsche Waffen-und Munitionsfabriken, which I’m going to call DWM for the rest of this article.ĭWM’s company motto, emblazoned above the main gate, was Si Vis Pacem, Para Bellum, which is Latin for “If you seek peace, prepare for war.”Īfter the round was approved by DWM, Luger saddled it with the name 9mm Parabellum, in reference to that, admittedly badass, motto. 9mm Parabellum: The Originalįirst up, we have 9mm Parabellum. ![]() There are tons of 9mm designations out there, so let’s go over each one individually so you can see how we got into this mess, and why some folks have so many questions. ![]() Let’s talk about some of the other 9mm designations and cover the differences there.
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