![]() 380 ACP, but also what the difference between a 3.1″ and 3.54″ barrel can make with these particular loads. The results were very interesting and show us not only how much more energy is to be gained with 9mm over. 380 ACP the Caldwell chronograph was placed ten feet in front of the muzzle so as to represent how hard the bullet would strike a target at that distance. This tells us how much energy the bullet has when it leaves the barrel. So what do those velocities mean? We used the classic calculation of: Muzzle Energy in Foot Pounds = 0.5 x Projectile Mass x Projectile Velocity squared / 1000 Fortunately, we were able to eliminate most of those variables by shooting paired firearms and conducting all ammunition testing on the same day. Barrel length, rifling type, operating system, and even ambient temperature and atmospheric pressures can cause one velocity test to have different results than another. We’ve come to expect advertised ammunition velocities to not match the end-user experience. ![]() 9mm Ammunition Velocities as tested 380 ACP Ammunition Load Velocity as Tested All calculations were from an average of five shots through a Caldwell Ballistic Chronograph. The ammunition found for this test is listed below with their advertised and measured muzzle velocities. The next step proved particularly challenging in a market that is enduring its now fourth in a row month of ammo panic buying, finding matching pairs of defensive ammunition instock. 380 ACP as the caliber is generally relegated to smaller direct-blowback pistols. Not only were did these two pairs meet the above criteria, but Walther’s roughly half inch-longer longer barrel provided us a chance to see what speed could be gained and in turn how much extra muzzle energy. 380 ACP – Which is Better for Concealed Carry?įortunately, both SCCY and Walther have handguns that meet the criteria in the SCCY CPX-2 and CPX-3 and Walther CCP in. Furthermore, we needed to test ammunition that was intended to have similar performance in each caliber. The same locking mechanism, barrel length, grip size, and operator mechanics. ![]() To test not only for muzzle energy but also for perceived recoil and handling we needed to find a true pair of pistols. ![]() Sure, there are hundreds of handguns out there chambered in either caliber, but few true pairs. To test this is not as easily done as one might expect. 380 ACP being 9x17mm and 9mm being 9x19mm. There is only two millimeters’ difference between the two calibers’ case lengths. 380 ACP against the German, Luger-designed 9mm. Not looking to self-rationalize we wanted to be as fair as possible and look at a classic debate that has quieted somewhat since the advent of the “wonder nines”. – -()- Caliber arguments seldom result in anything definitive as they tend to drift off into, “what if” and, “I heard” arguments generally fueled by participants defending what they own. ![]()
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