45 auto vs 45 acp

[.45Coltguy]

From Starline:

View attachment 1261977

Search 45 auto brass and it is almost all marked 45 Auto.

Yep, just looked at a bunch of my .45 Auto brass and, it all is stamped ".45 Auto". I'd like to think that anyone fairly familiar with handguns would know that they are one and the same.
Lordy, lets not get started with .45 Colt-.45 Long Colt. It;s too early for me to start drinking.

 

[gwpercle]

Yep, just looked at a bunch of my .45 Auto brass and, it all is stamped ".45 Auto". I'd like to think that anyone fairly familiar with handguns would know that they are one and the same.
Lordy, lets not get started with .45 Colt-.45 Long Colt. It;s too early for me to start drinking.

How about we talk about the 45 AR ... 45 Auto Rim ... that's a fun one !
Gary

 

[AJC1]

Yep, just looked at a bunch of my .45 Auto brass and, it all is stamped ".45 Auto". I'd like to think that anyone fairly familiar with handguns would know that they are one and the same.
Lordy, lets not get started with .45 Colt-.45 Long Colt. It;s too early for me to start drinking.

But was it a 45 long government

 

[Miami_JBT]

Growing up I never heard anyone call the 45,45acp.It was always 45 auto.never saw a case that was head stamped 45 acp either.now in the last several years,it seems all i see and hear is people calling it 45 acp.did something change?

S&W and GLOCK for example refuse to advertise their competitors' names on their guns. Very early GLOCK 22s and 23s said .40 S&W. Gaston Glock wasn't happy and had that stopped, the guns were and to this day now marked .40. GLOCK did similar with .45 ACP and .357 SIG. They're both .45 and just .357.

S&W did the same with .45 ACP for their 3rd Gens. Those say .45 Auto.

 

[entropy]

It's actually pretty common.
.380ACP is also called .380, .380Auto, 9mmKurz and 9mm Browning.
9mm is also called 9mmP, 9mm Parabellum, 9mm Luger, 9x19, 9mmx19, and 9mm NATO.
.40S&W is also called .40 Auto

.45Super brass is based on the stronger .45WinMag brass (or more accurately on .451 Detonics which was based on .45Win Mag). Standard .45ACP brass can be used, but it's not generally recommended practice.

.45ACP +P does not use different brass than standard pressure .45ACP.

.45ACP was loaded with smokeless powder from its inception.

9mm Corto is another name for .380 ACP, as well as 9x17.

10mm Short is another name for .40 Slow & Wobbly.

 

[Walkalong]

It’s been called .45 Auto and/or. .45 ACP so long that both are correct, kind of like common law marriage.

I’m a .45 ACP guy myself, but don’t care which people call it, and never make an issue of it. Can’t remember anyone doing so.

Now clip vs mag? Yea, folks get excited.

 

[Riomouse911]

I had to go check on a few of my pistolas;

Glock has “.40” and “9x19” and “.22lr”. (Those are all I have.)

SA Ronin, Kimber and Ruger 1911’s have no caliber on their slides. SA Loaded has “Cal .45”, the SA V-16 has “.45 Super.”

Les Baer has “.45 ACP”.

It all works for me.



Stay safe.

 

[sgt127]

With autos:

Whatcha carrying? A 45.

And whatcha carrying today? A 9.

With revolver:

And now? A 38

That a 357?

Nope. 41.

44 I’d add magnum or special I suppose.

Unless it’s something weird, like a 9mm Makarov or .45 Long Colt.

I think it’s just kinda understood.

 

[reddog81]

I want to buy a 45 Win Mag and have a batch of brass made up with .45 Long Auto headstamps. Maybe I can get semi-auto and revolver guys head to explode.

 

[CapnMac]

9mm Browning

Which wants being specific, as there's also the 9mm Browning Long, the 9x23

45 government

Confusingly that was the moniker for GI issued .45-70

 

[UncleEd]

Tendency is to shorten a name from its original designation

For instance one might be a purist and say they have a Colt Diamondback in .38 S&W Special Ctg. Or another lad might talk of his S&W Model 29 in .44 Remington Magnum.

Me, I say .45ACP all the time to avoid confusion with the .45 Colt. Doesn't always help.

 

[jmr40]

I'd never given it a thought until reading this thread, but I tend to say 45auto when speaking, but when typing or writing use 45ACP. I guess I'm really lazy, speaking 45 auto is only 2 syllables vs 3 with 45 ACP. Writing 45 ACP is one less keystroke than 45 auto.

 

[PapaG]

45 Long Colt anyone?

45 Colt is my default, Long Colt is redundant, but I don't care. It is my favorite single action chambering.

 

[Jim Watson]

Which wants being specific, as there's also the 9mm Browning Long, the 9x23

9mm Browning Long is 9x20 SR, a shortened .38 Auto.
9x23 gets you 9mm Steyr, 9mm Bergman Bayard/Largo, 9x23 Winchester, and French for .38 Super as 9x23 SR.

 

[Miami_JBT]

I want to buy a 45 Win Mag and have a batch of brass made up with .45 Long Auto headstamps. Maybe I can get semi-auto and revolver guys head to explode.

Hey now, this is a family friendly forum. Don't get me all hot and bothered.

 

[LV Gun]

Some of us remember and still use ".45 Auto Rim". Today, it's so seldom encountered that generally very few people distinguish between it and the".45 auto" or ".45 acp" but once upon a time that wasn't the case.

I still load 45 Auto Rimmed for my S&W 625 but you are correct that at one time it was very popular. Now you have to explain what it is.

 

[LV Gun]

There's nothing preventing them from doing that--SAAMI doesn't spec anything but external dimensions.

Some ammunition/case manufacturers (Starline is one) use thicker brass for .45ACP+P vs standard pressure .45ACP ammo, but that's not a hard and fast requirement. Some manufacturers use the same brass, just with a different headstamp.

And don’t forget 45 Super which I have and load.

 

[JohnKSa]

Right. .45Super should be heavier brass than .45ACP. It's actually not based on the .45ACP cartridge case, it was originally made from the .451 Detonics case which was, itself, derived from .45WinMag brass.

 

[joneb]

As long as 45 comes first it couldn't get better. I have loaded 45 colt and 45 auto with the same cast bullet. Must have a 45 in it to be interesting.
This is like a Crescent wrench that has Proto on it. Channel lock or water pump pliers.

Sorry I just couldn't resist

 

[DanK3Pos]

I have changed it to 45aarp. Oddly, almost everyone knows what I mean......

9mm Luger is actually older than 45 ACP, so that one should have the AARP name.

 

[CapnMac]

9mm Browning Long is 9x20 SR, a shortened .38 Auto.

Oops. All to easy to get 38acp; 38super; and 9 Browning Long confuddled.

 

[Jim Watson]

I have gotten over the acute phase of Novelty Gun Disease, I am not likely to buy anything not of clear and obvious application, but I still get twinges. The big 1903 9mm Browning Long is one of them. A "parallel ruler" Colt .38 or .45 is another.

 

[Soonerpesek]

45ACP +P does not use different brass than standard pressure .45ACP.

Some ammunition/case manufacturers (Starline is one) use thicker brass for .45ACP+P vs standard pressure .45ACP ammo, but that's not a hard and fast requirement. Some manufacturers use the same brass, just with a different headstamp.

Thanks for clearing that up…..

 

[Pat Riot]

I’m pretty sure I have always called the .45 ACP “.45 ACP” from the time I was in the Navy until now.

 

[12Bravo20]

Oops. All to easy to get 38acp; 38super; and 9 Browning Long confuddled.

Starline 9mm Largo and 38 Super Comp brass is the exact same. The only difference is the caliber name stamped on the case.

I bet people will get confused if they ask what pistol I am shooting and I tell the 38 Super yet my brass says 9mm Largo

PS: I use 38 ACP dies for reloading 9mm Largo, 38 Super and 38 Super Comp.