Hello, I'm an expert in firearms and ballistics. When comparing the calibers of firearms, it's important to understand that the terms "9mm" and ".45" refer to the diameter of the bullet in millimeters and hundredths of an inch, respectively.
A
9mm is a cartridge that uses a bullet with a diameter of 9 millimeters. It is a very common caliber used in handguns and is known for its relatively low recoil and high capacity in magazines.
On the other hand, a
.45 typically refers to the .45 ACP (Automatic Colt Pistol) cartridge, which uses a bullet with a diameter of .452 inches, which is approximately 11.5 millimeters. This caliber is also popular in handguns and is known for its stopping power and heavier bullets.
So, when comparing the two by diameter, a .45 caliber bullet is
bigger than a 9mm bullet.
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