[wbwanzer]

I'm embarresed to ask this but I really don't know the answer. I'm not new to shooting but am new to the Springfield 1911 that I just got (see thread titled 'Pics of SA 1911 Mil-Spec and questions). All my other pistols are 9mm or 22LR. Here goes: I bought two boxes of .45 ACP for the 1911 and just noticed that the barrel of my Springer says .45 Auto. Are they the same? I'm guessing they're not, and I've now got the wrong ammo for trying the gun out tomorrow.

Remember to take The Highroad and don't call me a dumb a$$.

Thanks for any help. I'm dying to try this pistol.

[rcmodel]

Yes.

.45 ACP and .45 Auto are one & the same.

The only others you need to steer clear of are .45 Auto-Rim, .45 GAP and .45 Colt.

They are most definately different calibers for different guns.

rc

[esheato]

ACP Automatic Colt Pistol.

Yes, they're the same.

Just watch out for 45 GAP and you'll be fine.

[Wade Wilson]

.45 Auto is just short for, Automatic Colt Pistol (ACP).

Ask as many questions as you can, you learn faster that way!

[wbwanzer]

Thanks guys. The Internet in general, and forums in particular are a wonderful thing.

[DeepSouth]

This brings up an interesting question.

Will 45gap chamber in 45acp???
If so would it fire?????

BTW:
I've never seen a 45gap.

[surjimmy]

The only Dumb question is an un-asked question.

[sidheshooter]

I have to admit that you've piqued my curiosity, given the price you payed for that Springer. Do let us know how it shoots.

At some point, you'll probably be asking about magazines too, so here's one of my favorite links (with more links itself) on the subject:

http://how-i-did-it.org/magazines/

:)

[loadedround]

Deepsouth: The answer is yes, it will chamber and fire......ONCE!

[REAPER4206969]

Yes. Companies stamp "Auto" because they don't want "Colt" on their firearm/ammo. Same with the .30-30 (.30WCF Winchester Center Fire) and Glock no longer adding "SW" (Smith & Wesson) to their .40 models.

[migkillertwo]

".45 auto" and ".45 ACP" are the same. "Auto" is short for "automatic colt pistol"

[migkillertwo]

ACP Automatic Colt Pistol.

Yes, they're the same.

Just watch out for 45 GAP and you'll be fine.
yeah that happened to my dad once. He bought 2 or 3 50-round boxes of Federal .45 GAP for his Kimber Crimson-ultra carry.

ever since then my mom told my dad to always consult me before buying anything gun related :P

[ugaarguy]

Deepsouth: The answer is yes, it will chamber and fire......ONCE!
Actually, it'll probably chamber & fire several times, or not at all. In guns with a controlled round feed (like the M1911) where the rim of the cartridge slips under the extractor as it's picked up out of the magazine, and is held tight against the breech face, the GAP will often fire just fine: it's basically headspacing like a revolver. In other firearms the round will usually deep chamber and the firing pin can't contact it. .45 GAP pressures are essentially the same as .45 ACP +P, and other than case & overall lengths the dimensions are also extremely close. Therefore, overpressure conditions are generally not a problem either. I still wouldn't try it though.

[Shadow 7D]

the issue whether it hits the rifling and engages or jams because it has to jump a gap to make it.

[ugaarguy]

the issue whether it hits the rifling and engages or jams because it has to jump a gap to make it.
It's not an issue at all. It's not jumping a gap like the bbl / cylinder gap on a revolver where a forcing cone is needed. It's just a little bit of freebore. That can affect accuracy, but wont affect function in this case (cartridge being held against breech face by extractor).

[The Lone Haranguer]

It will nearly always be labeled ".45 Auto" or ".45 Automatic" on the box, regardless of manufacturer (at least in my observation).

[RyanM]

the issue whether it hits the rifling and engages or jams because it has to jump a gap to make it.

If anything, some extra freebore will reduce the chamber pressure a little. Like how an OAL that lets a bullet get a "running start" can be perfectly safe, while the same powder load with the bullet jammed into the rifling can blow up a gun.

There's really nothing for a bullet to "jam" on. Any autopistol bullet will be rounded enough to glance off the chamber shoulder.

[Guns and more]

Embarrased to ask this question
The only question that you should never ask HERE is, "Did I get a good deal on this gun?"
Invariably, someone will say, "No, I bought one yesterday for $10."
"...and you should have bought a Glock."

[sidheshooter]

That's right.^^^^