.380acp M9 berreta

Discussion in 'Beretta Forum' started by JonM, Jun 20, 2014.

  1. JonM

    JonM Moderator

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    a few weeks ago there was a discussion about 380 in a m9 berreta and it being mistakenly loaded in a berreta mag. today i managed to get to the range and try it out.

    first test was just loading a single 380 it shor fine and to poa.

    next i put 2 rounds in the mag chambered one and fired again shot great to poa and cycled just enough to cock the hammer but not eject the cartridge.

    then chambered a 9mm with the next round a 380. fired, cycled 380 loaded and fired to poa.

    ended up firing 15 380acp all fired and hit to poa none cycled the slide enough to eject. no cases were split or showed any deformity.

    one round failed to ignite. most likely it wasnt being held tight enough by the extractor. reloaded it and it fired fine.

    so in a pinch you can use 380acp in a m9 but it will be single shot and manually cycled and it may not fire if the extractor doesnt hold it tight to the slide face
     
  2. fa35jsf

    fa35jsf New Member

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    So would that only apply to the M9 or theoretically would that apply to most/all 9mm?

    Obviously I am not going to try because my fingers/hands are needed to fly a plane.
     

  3. JonM

    JonM Moderator

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    all.

    its the same thing as using a 38spl in a 357mag. just with an auto loader your relying on the extractor to hold the cartridge in place.

    a 380 uses .357diameter bullets same as a 9mm case dimensions are identical except for length as the 380 is a bit shorter which is why it has difficulty staying against the bolt face. its also got quite a bit less powder so less pressure less velocity which is why it wouldnt cycle.

    i used a m9 because of feed reliability. the damn things feed anything and they are tough as hell just in case.

    anyway its pretty useless by and large. although i may at some point try and find a m9 barrel i can have reamed to 380 and with a lighter recoil spring having a full size 20+1 380 for plinking would be cool.
     
  4. DrFootball

    DrFootball disappointed & disgusted, But DETERMINED... Lifetime Supporter

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    Bersa Thunder + and Thunder Combat+ are 15 rds. And there is a beretta large Cap 380 and 32...


    Sent from my iPhone using Firearms Talkh
     
  5. robocop10mm

    robocop10mm Lifetime Supporting Member Lifetime Supporter

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    The base diameter of the .380 is a bit smaller than the 9 X 19. A hot loaded .380 "might" split. Most .380's are loaded to low enough pressures to not cause any problems in this scenario (other than the obvious cycling issues)
     
  6. JonM

    JonM Moderator

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    I've got the thunder plus and its a sweet littlegun. Call me weird but I would like a fullsize handgun like a m9 in 380.

    I could download a 9mm using 380 charge weights but its kind of a half measure and easy to confuse with regular loads. But this was just an experiment to see how accurate and if it would cycle brought about by a reply in a 9mm thread about 380 out of a 9mm by accident being disastrous and causing a kaboom.
     
  7. John_Deer

    John_Deer New Member

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    I understand your desire to have an M9 chambered for 380 acp. One would think there is a European full size 380 for the same money as an M9 since many European countries issue 380 acp to the police.

    J&G has a project pistol that would fit the bill. They have a 92fs with a ringed barrel for $329. You can get a barrel for $100 from numrich.
     
  8. DrFootball

    DrFootball disappointed & disgusted, But DETERMINED... Lifetime Supporter

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    I'm hoping to get one one of these Years. I had a Beretta M84, another divorce casualty...



    Sent from my iPhone using Firearms Talkh
     
  9. Defiant_one

    Defiant_one New Member

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    Almost ashamed to admit this

    But I have accidently shot .380 in my 9mm Glock. Had my Bersa Thunder and Glock 19 together along with two boxes of similar ammo. Well, I accidently loaded the Glock with the .380

    Rack the slide. Point shoot. But did not eject. So Rack the slide, next round. Bang. So it will shoot, just doesn't like to cycle.

    As to the Bersa's, the Bersa Thunder 380 = especially the high cap PLUS at 15+1 is pretty sweet. Has a nice heft. I have the regular Bersa Thunder 380 (7+1) but use the mags form the DLX model (9+1). Glove box gun...