| .45 ACP | |
|---|---|
 | |
| Vital statistics | |
| Introduction Date | 1911 |
| Service Length | 1911-Present |
| Case Type | Rimless, straight |
| Bullet Diameter | .452 in (11.5 mm) |
| Neck Diameter | .473 in (12.0 mm) |
| Base Diameter | .476 in (12.1 mm) |
| Rim Diameter | .480 in (12.2 mm) |
| Case Length | .898 in (22.8 mm) |
| Overall Length | 1.275 in (32.4 mm) |
| Rifling Twist | 1 in 16 in (406 mm) |
| Primer Type | Large or Small Pistol |
| Maximum Pressure | 21,000 psi (140 MPa) |
| Bullet Weight/Type | |
The .45 ACP (11.43x23mm) is an ammunition type for weapons that are mostly pistols and submachine guns. It has remained one of the best rounds in the world.
History[]
The .45 ACP wasn't produced until 1911; before the start of World War 1. It was utilized by the American icon; the Colt M1911 and it's variants. It later became the round for other weapons; from other countries.
Present Day Usage[]
The .45 ACP; from it's introduction in the 20th century; has remained one of the most popular pistol calibers to be utilized and even after a service of over 100 years; the round refuses to be put to rest. Archaeologists such as Tony Secord; utilizes the .45 ACP in his dual Mauser C96 pistols; customized to his needs.