.45 Auto vs .45 APC


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Justang
November 30, 2004, 07:51 AM
what's the difference between these two rounds? I have a box of .45 automatic sitting here (I bought long ago thinking it was .45 long colt rounds.)

what can you shoot these in?

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Browns Fan
November 30, 2004, 09:04 AM
They are essentially the same round. APC stands for Automatic Pistol Cartridge.

isp2605
November 30, 2004, 09:06 AM
It should be ACP instead of APC. ACP is Automatic Colt Pistol. The official name for the round is .45 ACP. In common usage the .45 ACP and .45 Auto are the exact same thing, just shortened to .45 Auto from .45 ACP.
However, there is a possibility the .45 Auto could be .45 Auto Rim. It will be easy for you to determine if they are .45 AR. The AR is a rimmed case, like your .45 LC where the .45 ACP is rimless. Not likely tho you could just drop in at Wally World and pick up a box of .45 AR. Not all that common.
If they are .45 ACP then they can be fired in any .45 ACP gun of which just about every gun maker has a model. Very common. If they're .45 AR then they're designed for 1917 Colt and Smith revolvers. I don't know if they'd fire in your .45 LC.

Cortland
November 30, 2004, 01:47 PM
I don't think .45 AR would work in a .45 LC revolver due to the thickness of the AR's rim. As others have said, .45 ACP is the original and "correct" name. .45 Auto stems (partially at least) from the fact that a lot of gun manufacturers don't like to put the name of another company on their gun -- even in acronym form. Hence .45 ACP becomes .45 Auto, .357 Sig becomes .357 Auto (to Glock at least), 10mm Norma becomes 10mm Auto, ,44 Remington Magnum becomes .44 Magnum, etc.

stans
December 1, 2004, 07:07 AM
APC = Armored Personnel Carrier

ACP = Automatic Colt Pistol

45 Auto Rim does have a really thick rim and if it works in a revolver chambered in 45 Colt then that revolver has some serious headspace problems.

45 ACP is often labeled as 45 Auto and must be fired in guns chambered for 45 Auto (45 ACP), do not attempt to fire them in a 45 Colt revolver.

lee n. field
December 1, 2004, 09:55 AM
APC == American Power Conversion (http://www.apc.com)

Browns Fan
December 1, 2004, 01:32 PM
Ooops! I stand corrected! ;)

Justang
December 1, 2004, 02:49 PM
wow. Uhhh, I actually knew it was ACP... but typed it wrong each and every time. Heck, I'm having a problem doing it correctly now. :p

this is what they look like
http://www.reloadammo.com/bul45.gif

I just got them at Wally World.

Cool, I've never seen them just say Automatic on them. I've always seem them say ACP on them.

Thanks for clearing this up. Now I have 100rds of .45 and I don't even own a .45. :p Guess I'll go rent a .45 at the range. See if I like the Kimber or the Springfield more.

thanks

Justang
December 1, 2004, 02:51 PM
APC = Armored Personnel Carrier

ACP = Automatic Colt Pistol

45 Auto Rim does have a really thick rim and if it works in a revolver chambered in 45 Colt then that revolver has some serious headspace problems.

45 ACP is often labeled as 45 Auto and must be fired in guns chambered for 45 Auto (45 ACP), do not attempt to fire them in a 45 Colt revolver.

yeah, I figured that out really fast. I dropped on in my Ruger and was like ***. Then the box of ammo has just sat in my underwear drawer (why there I don't know) for like a year!

countertop
December 1, 2004, 02:53 PM
APC == American Power Conversion

My first job out of college was working in their marketing department.

stans
December 1, 2004, 10:41 PM
Now I have 100rds of .45 and I don't even own a .45.
Sounds like it is time to buy something that is chambered in 45 ACP! :)

Justang
December 1, 2004, 11:36 PM
yes, but the question remains... Kimber or Springfield. :confused:

I know it's one of those two. Not sure which one I want to spend my money on.

Jim K
December 2, 2004, 12:06 AM
The .45 Auto Rim was made for use in the S&W Model 1917 and Colt Model 1917 and their civilian copies. In military service, the guns were designed and used with .45 ACP and half-moon clips; after WWI, the .45 Auto Rim was introduced to get rid of the clips; it has a thick rim to take up the same space as the clip while allowing normal extraction.

Also, APC can stand for aspirin, phenacetin, and caffeine, or aspirin, phenacetin, and codeine. Super headache tablets. .45 ACP also cures headaches, but in a rather drastic way.

ACP can also stand for Allied Communications Publication, something all good military communicators should know.

Jim

Cortland
December 2, 2004, 12:52 AM
Exhaustive list of alternate meanings for ACP (http://www.acronymfinder.com/af-query.asp?p=dict&String=exact&Acronym=ACP), and, while we're at it, APC (http://www.acronymfinder.com/af-query.asp?p=dict&String=exact&Acronym=APC).

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