Marvelous weapon, 11.43 mm. It was always held in awe by the combined forces we worked with. Great to shoot and carry. I was sad to see that the Army dumped them for the 9mm.

"Even in its non-expanding full metal jacket (FMJ) version, the .45 ACP cartridge has a reputation for effectiveness against human targets because its large diameter creates a deep and substantial permanent wound channel which lowers blood pressure more rapidly"