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45 Auto same as 45 ACP?

Discussion in 'Caliber Corner' started by redhawknc1, Jan 11, 2010.

  1. redhawknc1

    redhawknc1

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    Jan 6, 2010
    OK, dumb question here probably...I have 3 20 round boxes of Federal Personal Defense Hydra Shok JHP 165 Grain PD45HS3 that I had purchased years ago at my local Wal-Mart on sale for $7 a box. Is this the correct ammo for my new Kimber 45 ACP? Is 45 auto and 45ACP interchangeable lingo for the same round? Was going to buy some ammo and remembered I had these. Obviously need to buy more ammo, 60 rounds won't last long!
     
  2. dreis454

    dreis454

    1,742
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    Jul 11, 2009
    Enfield,CT
    yes,same stuff.

    be careful of .45 GAP as it is NOT the same
     


  3. redhawknc1

    redhawknc1

    18
    0
    Jan 6, 2010
    Thanks! I thought it usually had 45 acp on the cartridge....saw the 45 auto and wasn't sure.
     
  4. fsqridah

    fsqridah

    502
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    Sep 25, 2008
    Lexington
    Whenever you're talking (actually speaking, not typing), use "auto" instead of "ACP." It saves time and sounds better. So, "forty-five auto, three-eighty auto, thirty-two auto, twenty-five auto." Nothing bugs me more than someone saying, "I carry a forty-five AY-SEE-PEE."
     
  5. G26S239

    G26S239 NRA Patron

    11,415
    232
    Mar 17, 2008
    PRK
    ACP is Automatic Colt Pistol named for the 1905/1911 Series of pistol it was designed for so 45 Automatic is taken directly from ACP.
     
  6. alwaysshootin

    alwaysshootin

    3,749
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    Nov 14, 2005
    Disagree, I prefer the sound of,

    45 autooooe matic pistol! :supergrin:
     
  7. krunchnik

    krunchnik THE CROW

    347
    4
    Aug 24, 2009
    Lakeland,TN
    Oh Man,and here I thought it stood for Always-cloned-perfect.:wow:
     
  8. One day, if the GAP passes the ACP, the generic term of "forty-five auto" may well refer to the GAP :rofl:

    Glock Automatic Pistol
    Automatic Colt Pistol

    So, I'd prefer people to say "Aaaceepee" :)
     
  9. fsqridah

    fsqridah

    502
    0
    Sep 25, 2008
    Lexington
    I say "forty-five auto" or "forty-five GAP." Hearing "forty-five Glock" or "forty-five gee-ay-pee" gets on my nerves more than "forty-five ay-see-pee."

    Still, none of those get my panties in a wad more than having some handgun "guru" tell me something I don't know, then somehow manage to bring "clips" into the conversation. Odds are if you say "clip" instead of "mag" or "magazine," I will completely discount anything you say. :supergrin:

    And trust me, regardless of how much I support the .45 GAP and believe in its legitimate but very specific purposes to the very core, it will never, ever surpass the .45 ACP in popularity and usage.
     
    Last edited: Jan 11, 2010
  10. isp2605

    isp2605

    1,532
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    Oct 2, 2002
    IL
    You're OK with those for your Kimber. They're the same.
    However, if you happen into a large ammo store and ask for .45 Auto make sure they don't give you .45 Auto Rim. You might get a clerk who sees only the ".45 Auto" part and you'll end up with the wrong ammo. The .45 Auto Rim is a completely different rd than the .45 ACP and it will not work in your Kimber.
     
  11. fsqridah

    fsqridah

    502
    0
    Sep 25, 2008
    Lexington
    Great point. I didn't even think about the the .45 Auto Rim.

    .45 ACP on left, .45 Auto Rim on right:

    [​IMG]
     
  12. GVFlyer

    GVFlyer Senior Member

    10,698
    1,762
    Sep 9, 2008
    Somewhere in the air.
    That's likely to occur when we're down to one manufacturer for .45 GAP pistols and everyone on the planet has all model Glock .45 GAPs on closeout at between $379 and $399 delivered.

    ;)
     
  13. JustShoot-IT

    JustShoot-IT GrudgingGlocker

    Good guestion and some great answers.
    Now, not to hijack the thread, but, while hijacking the thread, for what and/or where is the 45 Auto Rim used?
     
  14. Butch

    Butch RetiredDinosaur Millennium Member CLM

    11,108
    87
    Dec 17, 1998
    Minnesota
    It's a revolver cartridge used in S&W (and one Colt) revolvers chambered for the .45 ACP round that use moon clips to eject the empty cases. The thick rim of the auto rim case makes the rounds headspace the same as for the ACP with the clips.

    [​IMG]

    [​IMG]

    [​IMG]
     
  15. JustShoot-IT

    JustShoot-IT GrudgingGlocker

    butch, thanks. Pics are way-cool for this eternal newbie.:wow:<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" /><o:p></o:p>
    One more question, you are saying that the 45 auto rim w/ a moon clip fits the 45acp revolvers cylinder on these guns; as in there is enough room behind the cylinder and it does not "back-out" when fired?<o:p></o:p>
     

  16. The .45AR is used without moon clips. Which is one reason that round exists.
     
  17. Butch

    Butch RetiredDinosaur Millennium Member CLM

    11,108
    87
    Dec 17, 1998
    Minnesota
    Correct, the thick rim fills the space required for the ACP with the moon clip, and gives the extractor something to push against to eject the case after firing, which is what the moon clip is for with the ACP rounds.

    Looking at the third pic above, note that cartridge in front center is an ACP round without the moon clip, the three rounds to the right of it are ACP's in a half moon clip, and the round to the left, is an auto rim.

    The ACP rounds can be used and fired in the revolver without the moon clips as the round head spaces on it's case mouth just as it does in an auto pistol, but the rimless case doesn't give the ejector a rim to push against for case extraction.....a problem solved with the half moon clips over ninety years ago.