It's main purpose is to fire a .45 caliber bullet which, in turn, will kill or wound any one who happens to be its' line of fire.
The Colt 45 was called that since it was made by the Colt company, and fires a .45 caliber bullet.
No. If it will even fit (the rim of a 44 magnum cartridge is much larger than a 45 Colt) it would be very dangerous to do. 45 Colt firearms were not designed for the forces of a 44 Magnum cartridge.
Automatic Colt Pistol. Colt invented the .45 Auto and thus had the right to name it.
Caliber refers to the diameter of a bullet. A bullet for a .38 Special is actually .357 inches across, and for a .45 auto, about .451 inches. The 45 bullet will be wider, and usually heavier. Please note that this is only the BULLET, which is the projectile. The CARTRIDGE (case, primer, powder, bullet) of the two are different size, shape, design and weight. There also is the .45 Colt bullet (often referred to as a .45 Long Colt). This is about the same diameter as the .45 auto but has a longer cartridge than the .45 auto or 38 Special.
No
Hodgdon load data shows a .452 bullet.
Colt -45 - 1957 The Three Thousand Dollar Bullet 1-3 was released on: USA: 1 November 1957
No. While there ARE firearms made to fire both the .45 Colt and the .410 shotshell, they were made for that purpose. Never attempt to fire ammo that a firearm was not made to fire.
.45 ACP
Because if you don't it won't fire.
No such thing. It is a typo. A 45 mm pistol would fire a bullet larger than a golf ball. I think you are looking for a .45 CALIBER pistol. That is a handgun that fires a bullet about 45/100ths of an inch in diameter. Perhaps the two best known are the 45 Colt Peacemaker type revolver of cowboy fame, and the 1911A1 .45 Automatic Pistol, used by the US Army.