9mm into 380?

Discussion in 'General Firearms Forum' started by Mugsie1, Oct 20, 2020.

  1. Mugsie1

    Mugsie1

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    I've just come into a large quantity of 380 ammunition. I have a ruger lcp in 380, but shooting it for any extended range time is not a pleasant experience.

    I have a g19 Gen 5 in 9mm, as well as other 9s too. I was wondering if anyone ever swapped out the 9mm barrel for a 380 barrel? Is there even such a thing as a conversion barrel swapping a 9 into a 380?

    Thoughts? Ideas? Suggestions?
     
  2. Cambo

    Cambo

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    For what .380 is selling for, you could buy a lot of 9mm. Just sell it.
     
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  3. FoodBag

    FoodBag Previously nutsnax

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    380 is insanely expensive. Dump it, buy some 9mm and pocket the difference.

    Unless theyre handloads....
     
  4. lesgeaux

    lesgeaux

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    That would be nice if there would come about conversion barrels to go from 9mm to 380 acp. I suspect a change of recoil spring would be necessary. There must be an engineering hurdle that has made it difficult since it is not on the market already.
     
  5. Mugsie1

    Mugsie1

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    I've got multiple boxes of unopened 380, probably several hundred rounds. Range and SD versions. Didn't think of selling it, but I would just rather shoot it if I could. Now you have me thinking.
     
  6. Mugsie1

    Mugsie1

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    Yikes! I haven't bought ammunition in years since I reload my own. I just looked up 380 prices and I'm shocked! I could buy a house with what I've got (well, maybe not a house but a nice shed!). Prices are insane. I can't begin to imagine what drives that market because its a 9mm only .100 shorter case. This is nuts.
     
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  7. Sherlock913

    Sherlock913 If the coronavirus doesn't take you out, can I?

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    I think the mags are the problem. Since the Glock 28 isn't sold in the US and the 380 is shorter, I would think there would be feeding issues trying to use a 9mm mag.
     
  8. TeaDub

    TeaDub

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    Unless you are talking multiple cases, keep it. It won't "pay off your house" so to speak. Ammo really takes up little space and properly stored, will last many decades. Any ammo stock you have now is worth holding IMO.

    Chip away at with your LCP and who knows, you may find a G42 or other, larger 380 gun that would be a pleasure at the range.

    ETA: Just saw your post #6. If you have that much, maybe sell some of it? I'd still keep a case or even two.
     
  9. Borg Warner

    Borg Warner Free Full Clip!

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    If shooting you LCP is not a pleasant experience, I suggest you get a Glock 42. That way you can practice with the 380 ammo that you have and carry it with Underwood Plus+P 90 grain XTP's and have a more effective weapon for defensive purposes.

    The .380 does not produce enough muzzle energy to cycle a 9mm slide and would require a lot more than just a barrel change. Otherwise you could fire 380 in a 9mm chamber and the shorter cartridge would headspace on the extractor claw just like with shooting 40 S&W out of a 10mm.
     
    Last edited: Oct 20, 2020
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  10. furetto7

    furetto7 Galloglaich

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    Since 9x19mm fires from a locked breech in most guns and 9x17mm (.380ACP) uses simple blowback against the recoil spring you would need to modify the gun to not lock the breech as the 9x17mm doesn't have a sufficient recoil impulse to properly cycle the action as Borg Warner pointed out.
     
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  11. John_AZ

    John_AZ

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    Do what I do... when I Come into ammo like that, I use it as an excuse for a new gun.

    might I suggest?

    564DAB47-3914-4016-8B59-386B50FFDE96.jpeg
     
  12. J_Rico

    J_Rico

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    Sell it while people are buying at crazy prices.

    Put the money away.

    Buy 9mm when the price comes back down.
     
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  13. Bren

    Bren NRA Life Member

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    That would be my idea. .380 is hot right now. I sold some revolver ammo at the last gun show, but I wish I had a load of .380 to sell at the next one.
     
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  14. Bren

    Bren NRA Life Member

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    Take it to the gun show and see what they'll trade. You could certainly trade it one for one for .40, but from what I have heard you might trade it for 9mm or .45.
     
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  15. wlkjr

    wlkjr

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    I could shoot it in any of the four G42's that we own. That would be a very good option. The G42 is a great little gun that fits in the pocket very well. Ammo for a .380 is outrageous. Since I reload, it's not so expensive.
     
  16. 835mag

    835mag

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    .380 has a slightly smaller case head .374" vs. .394". Also the 9mm case has about .010" taper.
     
  17. Cokeman

    Cokeman Glock 23

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    Is .380 more than 9mm right now? How much is it?
     
  18. Wankster

    Wankster

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    going for about .80 a round. It’s up there. I’ve got quite a bit too as my wife shoots it.
     
  19. bac1023

    bac1023

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    I hate the micro 380’s with a passion. The G42 is a great shooter.
     
  20. agtman

    agtman 10mm Philosopher

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    Better still is a simple barrel-swap between the .380 (9x17) and the 9mm Makarov (9x18). The cartridges will run in the same mags, and you can still find 9mm Mark ammo at decent prices.
     
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