.45 Auto vs .45 APC
- Thread starter Justang
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Browns Fan
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They are essentially the same round. APC stands for Automatic Pistol Cartridge.
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.
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
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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
Member
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.
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
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APC == American Power Conversion
Browns Fan
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Ooops! I stand corrected! 
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.
this is what they look like
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. Guess I'll go rent a .45 at the range. See if I like the Kimber or the Springfield more.
thanks
this is what they look like
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.
Guess I'll go rent a .45 at the range. See if I like the Kimber or the Springfield more. thanks
countertop
Member
My first job out of college was working in their marketing department.
stans
Member
Sounds like it is time to buy something that is chambered in 45 ACP!
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
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
Member
Exhaustive list of alternate meanings for ACP, and, while we're at it, APC.
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