45 ACP versus 45 Auto

[Jiffy]

Call me nieve or just not thinking it through 45 ACP is the exact same as 45 Auto?

I don't mean lc or anything else just those 2.

Any real differences at all? Or advantages?

Thanks in advance

 

[trebor2880]

Yes the 45 ACP is often just called the 45 Auto. But there is also the 45 Rim and the 45 GAP, which are all different.

 

[Stevo]

The "Auto" is just "Automatic Colt Pistol" shortened.

It's the same.

 

[mikeydagunz]

You are not being naive! It is always great to ask questions 45ACP is the same thing as 45 Auto. They are an automatic rimless cartridge that feeds through a magazine in a handgun. 1911's, glocks etc. There is however a cartridge that is 11.5x23R. It is a rimmed cartridge specifically designed to be fired in revolvers originally chambered for the .45 ACP cartridge.

Mikey

 

[Fox]

You are not being naive! It is always great to ask questions 45ACP is the same thing as 45 Auto. They are an automatic rimless cartridge that feeds through a magazine in a handgun. 1911's, glocks etc. There is however a cartridge that is 11.5x23R. It is a rimmed cartridge specifically designed to be fired in revolvers originally chambered for the .45 ACP cartridge.

Mikey

Also referred to 45 Auto Rim

 

[Milanczar]

There is however a cartridge that is 11.5x23R. It is a rimmed cartridge specifically designed to be fired in revolvers originally chambered for the .45 ACP cartridge.

Yup Auto Rim. Designed for the Colt 1917 revolver (also manufactured by S&W).

 

[wd113]

Same thing with 38acp/auto .... I was sorting a bunch of inherited shells and had to resort to google and cgn to figure them out.... best to make sure!

 

[Jiffy]

Thank you everyone

 

[Fox]

Yup Auto Rim. Designed for the Colt 1917 revolver (also manufactured by S&W).

The Brits made Webley pistols into a 45 ACP/Auto Rim as well, 45 ACP on moon clips due to the amount of 45 ACP ammo VS 455 Webley but the 45 Auto Rim worked in them too.