Automatic Colt Pistol The Model 1911 pistol was developed for the Army. Most bullets (cartridges) had a large base for use in the cylinder of a revolver. The Colt pistol was automatic and used a clip so the cartridge did not have a base that was wider than the bullet. This bullet was specially designed for this gun. It became known as the .45 ACP so it would not be confused with other bullets.
Automatic Colt Pistol.
It was chambered in both 32 ACP and 380 ACP.
0.380 ACP.
.45 caliber ACP
.45 ACP
It sounds like maybe a .45 ACP. If the bullet is 11mm wide (diameter) and the case (not counting the bullet) is 25mm long, that sounds about right for a .45 ACP round.
It depends on several factors. First, do you mean .45 ACP? .45mm bullet is not a handgun bullet. If you do mean that, here is a basic answer. It depends on several factors: the particular cartridge specifications, where/what it hits, whether it hits a vital organ, whether it expands.
.40 S&W cartridge, bullet diameter = .401" .380 ACP cartridge, bullet diameter = .355-.356" .32 ACP cartridge, bullet diameter = .311 - .312"
Depends on which .45- 45 Colt, 45 ACP, 45 Magnum, 45-70, and which bullet, and what it is fired from. If you mean the .45 ACP fired by a 1911A1 pistol, velocity varies from 830 FPS up to about 1020 fps. Slow, fat, but gets the job done.
ACP stand for Automatic Colt Pistol
9x17mm, otherwise known as the .380 ACP.
In the case of the 1911A1 pistol, in .45 ACP, firing a standard 230 gr. round nosed bullet, when elevated to 33 degrees, the bullet will travel 2096 ft. Not accurately, but that is it's maximum RANGE. When fired from a carbine or submachinegun, the range may be greater.