Pennsylvania Firearm Owners Association
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  1. #1
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    Default Need help type of caliber friends gun

    My friend just inherited a gun and it states 9 m/m (380). Is it 9mm or 380?

    Iíll post a picture when I get home. Itís a 1911 Llama
    "I prefer dangerous freedom over peaceful slavery." Thomas Jefferson

  2. #2
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    Default Re: Need help type of caliber friends gun

    Not positive, but sounds like .380ACP which is also known as 9mm Kurz (short) or 9x17. Whereas 9mm Luger or Parabellum is 9x19. 9mm Kurz is the more European name of what us Americans call the .380 Automatic Colt Pistol.

  3. #3
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    Default Re: Need help type of caliber friends gun

    could be wrong, but a 380 is a shorter 9mm. Kinda like a .22cb is shorter then .22lr

  4. #4
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    Default Re: Need help type of caliber friends gun

    Quote Originally Posted by jthrelf View Post
    Not positive, but sounds like .380ACP which is also known as 9mm Kurz (short) or 9x17. Whereas 9mm Luger or Parabellum is 9x19. 9mm Kurz is the more European name of what us Americans call the .380 Automatic Colt Pistol.
    What he said .....excellent description. Technically you can fire a .380 cartridge out of a 9mm chambered firearm ( more than likely will not cycle) you cannot do the reverse without damaging the firearm.
    Fortuna audaces iuvat
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  5. #5
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    Default Re: Need help type of caliber friends gun

    Quote Originally Posted by jthrelf View Post
    Not positive, but sounds like .380ACP which is also known as 9mm Kurz (short) or 9x17. Whereas 9mm Luger or Parabellum is 9x19. 9mm Kurz is the more European name of what us Americans call the .380 Automatic Colt Pistol.
    Is spot on!

    Also known as 9mm Short, 9mm Corto, and 9mm Browning Court.

  6. #6
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    Default Re: Need help type of caliber friends gun

    Quote Originally Posted by jthrelf View Post
    Not positive, but sounds like .380ACP which is also known as 9mm Kurz (short) or 9x17. Whereas 9mm Luger or Parabellum is 9x19. 9mm Kurz is the more European name of what us Americans call the .380 Automatic Colt Pistol.
    Was er gesagt.

    Noah
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  7. #7
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    Default Re: Need help type of caliber friends gun

    Here's the photo---sorry for the late reply and thanks for the awesome explanations:

    9MM-380.jpg
    "I prefer dangerous freedom over peaceful slavery." Thomas Jefferson

  8. #8
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    Default Re: Need help type of caliber friends gun

    Quote Originally Posted by Grizzlytrap View Post
    could be wrong, but a 380 is a shorter 9mm. Kinda like a .22cb is shorter then .22lr
    Yes and no, they use the same diameter bullet but the .380 case is slightly smaller in diameter.
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  9. #9
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    Default Re: Need help type of caliber friends gun

    Quote Originally Posted by raxar View Post
    Yes and no, they use the same diameter bullet but the .380 case is slightly smaller in diameter.
    Correct. A .380 has a smaller rim. When I am reloading every now and then a .380 case gets mixed up with the 9 mm and it usually pops out of the shellholder or jams something up. I don't think any of the .380 cases made it to the end (which is good).

    FYI there is another 9mm out there that some people mix up. The 9x18 Makarov. It uses a slightly larger diameter bullet (.365 vs .355) but the rim is the same as a standard 9mm. All you have to do to make 9x18 brass from a 9mm case is to size it and trim it 1mm. Performance wise the 9x18 is slightly hotter than the .380.

    So summing it up what most of us just call a "9mm" is officially a 9mm Parabellum or a 9x19 (metric designation). But for some reason it is called a 9mm Luger in the US. And don't forget the 9mm Nato that is loaded to a higher pressure. Consider it a 9mm+p so don't shoot it in and older pistol. Clear?

    The 9x18 Makarov is 1mm shorter with a larger diameter bullet, and the .380 is a 9x17 with a smaller diameter case.

  10. #10
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    Default Re: Need help type of caliber friends gun

    When he see's the price of 380 ammo he'll wish it was 9mm luger

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