Read Next: Best 1911s Final Thoughts on 9mm vs .45 ACP A shooter loads 1911 magazines with .45 ACP. Tanner Denton In the end, the 9mm vs .45 ACP debate comes down to versatility. Modern .45 ACP ammo ...

The story of the 9mm vs .45 ACP is kind of a strange one. If you asked even self-described “gun people,” they would likely say that the 9mm is the newer cartridge, and the .45 ACP (or .45 Auto ...

In testing the 9mm and .40 S&W ammo at Liberty's home range, the Civil Defense rounds traveled at velocities greater than 2,000 fps and over 1900 fps for the Civil Defense .45 ACP round.

With the most common duty calibers today being 9mm, .40S&W and .45ACP, bullet weight can range from as light as 115g to as heavy as 230g.

The 9mm will not create as big a hole as the .45 acp does, and it will never outrun a speeding .357 magnum bullet fired from a 4-inch-barrel revolver, so as far as ballistics, it will never come ...

The 9mm will not create as big a hole as the .45 acp does, and it will never outrun a speeding .357 magnum bullet fired from a 4-inch-barrel revolver, so as far as ballistics, it will never come ...