what is the differant in auto ammo and acp ammo?
- eferrell01Lv 77 years agoFavorite Answer
All ACP is auto, but all auto is not ACP. ACP means Automatic Colt Pistol, and all auto ammo is not just for Colt. In ACP you hve .25, .38, .380 ,and .45. All the rest are just auto.
- augustLv 77 years ago
Most ammunition that is called "Auto" is called that because the manufacturer doesn't want to list a different company on their boxes.
In other words, .45 ACP (which stands for Automatic COLT Pistol, emphasis mine) is often called ".45 Auto" by ammunition manufacturers. They don't want Colt's name on the box, even in abbreviated form. Well, at least that's how it was a hundred years or so ago. Now, it's just how they're named because of habit.
An example of that is .30-30 Winchester. Originally, Winchester marketed that ammunition as .30 Winchester Center Fire, or ".30 WCF." Marlin, when they made a firearm to shoot it, called it .30-30, for the caliber (.30") and the grains of smokeless powder in the casing (30). They did this because they didn't want their rifles to have a competing manufacturer's brand name.
The more you know...
- Mr.357Lv 77 years ago
Auto is short for Automatic Colt Pistol in most cases, which is what ACP is short for.
- 7 years ago