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9mm lugar in 9mm largo chamber? 380 ACP in 9x19

RyanJames170
ok what would happen if a person fired a 9mm lugar in a 9mm largo gun?

and what about a 380 ACP in a 9mm largo?
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Comments

8 comments

Date Votes
  • RyanJames170
    380 ACP in 9mm lugar
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  • jonk
    Well I don't know of any such thing as 9mm lugAr. [;)]

    What would happen... one of 2 things. If the extractor held the case flush to the breech, it would fire without issue, though over time, as the case headspaces on the mouth, it would lead to a broken extractor. If the extractor did not hold the case that firmly, the firing pin would just drive the case foward and it wouldn't go off.

    Function may be problematic and ammo may not feed reliably from the mag.

    .38 ACP (NOT .38 super) is largely interchangeable with the 9X23 Largo. Reloading components are easily obtainable and surplus can still be had at a reasonable cost.
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  • 62fuelie
    Agree with jonk's analysis of 9x19 in 9x23 chamber. 9x17 (.380 ACP would be less likely to be held by the extractor due to slightly smaller rim. Low pressure round may or may not expand enough to form a gas seal in the chamber so you may get some gas leakage - never a good thing.
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  • Wolf.
    Firing sub-caliber ammunition in larger-caliber guns is a serious mistake and I urge you to not do it. (Same thing, don't do it, if you are contemplating trying to use larger ammo in smaller bore guns, even if, per chance, the larger bore ammo fits the chamber. Don't do it.)

    The risks you take in doing so are simply not worth the few dollars you may save by not purchasing the correct ammunition. It is your choice to expose yourself (and by proxy, your family) to harm by virtue of this risky behavior if indeed, you actually are contemplating trying to use incorrect ammunition in a weapon not designed for it. It is no one else's choice and no one is forcing you to do it by giving you advice or information. It is your choice.

    Whether or not any sub-caliber ammuntion will fire in any larger caliber weapon (or vice versa) is simply not the issue. The issue is the risk and I recommend that you do not do it.

    Also, what is not at issue here is someone asking questions in order to understand the differences in ammunition and guns which is important for a number of reasons, including safety. For example, there are probably five or six different 9mm auto cartridges out there. I believe the three that are in most common use today are:
    9mm Luger (9x19mm)
    9mm Makarov (9x18)
    .380acp (9x17mm or 9mmKurz)
    The .380 and the Makarov rounds look very much the same and could be used improperly and accidentally by some. So it important to know things like this as general knowledge and for safety considerations.
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  • perry shooter
    Never a good IDEA of playing WHAT IF[V] when it comes to semi autos using straight walled Rimless cases . As these head space on the case mouth all kinds of bad things can happen[xx(] Shoot the cartridge the Pistol was designed to shoot. Yes other rounds may go BANG but also may go Kaboom.
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  • Hawk Carse
    The first wave of surplus 9mm Largo guns came in with no surplus ammunition and people did not want to pay the price of commercial .38 Auto.
    So word went around that the Astra 400 was the "any 9mm" pistol.
    And sure enough, it will work fairly well with 9mm P as long as everything is just right. But when it is not just right, it is bad wrong. The late Maj. George C. Nonte did an article with pictures of blown caseheads from 9mm P in 9mm Largo chambers when the round got ahead of the extractor but was fired by the unlimited firing pin protrusion of many pistols. Not pretty. Not recommended.

    .380 ACP is much lower powered and, because of thin straight brass is much undersize for any other chamber. Not a good idea.
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  • RyanJames170
    i was just asking being the rounds were simular, better to ask before u do IMO,

    i found some good cheep brass and ammo for the 9mm largo so where good
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  • beantownshootah
    quote:Originally posted by RyanJames170
    ok what would happen if a person fired a 9mm lugar in a 9mm largo gun?

    At absolute best the round would fire and the gun would cycle normally.

    At worst, you'd get a case head separation potentially damaging the gun, shooter, and things in the nearby environment. BOOM.

    And there are multiple options "in between" which are more likely that either of the above: The gun jams with every single shot, the gun cycles OK for some period of time, but the extra force from the 9mm luger rounds causes slide or other serious damage to the gun (which eventually fails. . .badly), the shorter 9mm luger round quickly fouls up the largo chamber with carbon, etc.

    quote:
    and what about a 380 ACP in a 9mm largo?

    Basically the same as above, though the chance of the gun actually cycling normally with a .380 is much smaller, and the chance of you having feeding/cycling problems is much higher. Weaker .380 rounds would have less energy in the event of a case failure, but I think the smaller round might make the event itself more likely.

    In sum, there is no good reason to try either one of these things, short of a life-and-death emergency.
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