Comparing the two calibers is almost an unfair comparison as both are great for their intended purpose. 380 and the 9mm have pros and cons, which merit their existence. This has led to a lot of debate comparing the effectiveness of these calibers in such situations.īoth the. They have been used in numerous confrontations where humans were shot. 380 and 9mm have both established themselves as reliable and very popular personal protection calibers. 380 given the significant operating pressure difference between the two. This would potentially have disastrous consequences for the. Fortunately, the design difference is significant enough to avoid the two cartridges being fired in the wrong pistol. The only tiny difference is in case length. They’re both a 9mm diameter bullet, and both have straight-walled cases. The comparison is because, at a glance, the two bullets look pretty much identical. Why Are The 380 And 9mm So Often Compared To Each Other? 22LR shoots a roughly 40gr bullet at the same speed and is classed as a high-velocity cartridge. Propelling a bullet at an average speed of just over 1000 feet per second most definitely has the ability to cause a severe wound and even death. This difference is pretty significant in terms of performance, with the 9mm coming out tops in all categories as expected given its design. Velocity wise the difference is about 15% in favor of the 9mm, and the energy comparison shows a difference of around 20% and more. 9mmĪs can be seen from the above table, the average bullet weight used in the 380 compared to the 9mm is approximately 25% lighter. The higher the momentum, the deeper the bullet’s penetration. This pressure results in greater velocity being generated, which in turn gives the 9mm bullet greater momentum. The high pressure at which the 9mm operates permits more energy to be generated, making the caliber better suited to utilizing heavier bullet weights. Specifically, noticeable when looking at the above table is t he vast difference in operating pressures. In terms of design, there are significant differences. Most of them don’t exist anymore, but they have left us with a few name variations for the same ammunition.380 ACP Many created identical versions of the original bullets but called them by different names to overcome patent issues of the past. 380ACP And 9mm Known?Īs the popularity of the two calibers grew over time, numerous ammunition manufacturers the world over wanted their share of the pie. Both calibers surviving the test of time and still prospering in sales for well over 100 years is astounding and testament to their popularity! By What Other Names Are The. 380ACP by a few years and was invented by the Austrian firearm designer Georg Luger in 1901 for the 9mm Luger pistol. It was made specifically for use in the then newly released Colt Model 1908 pocket hammerless semi-automatic pistol. John Moses Browning is credited with the invention of the. 6 Which Caliber Is Better For Self-Defense?.5 Why Are The 380 And 9mm So Often Compared To Each Other?.
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