.40 cal casings necked down to 9mm?

Discussion in 'Firearm Related' started by Adam5, Sep 21, 2007.

  1. Adam5

    Adam5 Atlanta Overwatch

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    I was watching Dallas Swat last night and they were talking about the hand guns they use. They showed Sig and said they use Sig 226 pistols. They said that for an little extra punch they use .40 shell casings that are necked down to accept a 9mm bullet. They showed the ammo and that's what they looked like. Has anyone here heard of doing this? Why not just use .40 cal ammo?
     
  2. ptsmith24

    ptsmith24 New Member

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    Never heard of it...
     

  3. ber950

    ber950 Active Member

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    Its a .357 Sig. Why they didn't just call it that? Who knows.
     
  4. tace

    tace New Member

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    You mean 357 SIG ? That's what us common folk call it :)
     
  5. budder

    budder Moderator Staff Member

    So they're using .40 mags and 9mm barrels? Is that correct?
     
  6. wsweeks2

    wsweeks2 New Member

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    +1
     
  7. Adam5

    Adam5 Atlanta Overwatch

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    That's what they made it sound like.
     
  8. glockgirl

    glockgirl Guest

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    yeah I say that too...i thought I was confused cuz I was blonde but guess not
     
  9. rajl

    rajl Guest

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    As everyone else has pointed out, it's called .357 Sig. It's meant to replicate the performance of .357 magnum in a revolver. It's a nifty little round, but like so many things that have come from the gun industry lately, it's a solution in search of a problem.
     
  10. Adam5

    Adam5 Atlanta Overwatch

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    I didn't realize that that's what the .357 Sig is.
     
  11. wsweeks2

    wsweeks2 New Member

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    Another very similar round is the .400 CorBon - a .45 necked down to a .40.

    Has anyone on here ever fired one of those?
     
  12. GunNut

    GunNut New Member

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    Yep! :D I wish it had become more popular....pretty expensive to shoot now. Since everyone likes pictures...here is mine:

    [​IMG]
     
  13. ThetaReactor

    ThetaReactor Active Member

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    Wow. I never knew anyone made production guns in 400 Cor-Bon. Figures that AMT would be the company to do it. They love oddball cartridges.
     
  14. wsweeks2

    wsweeks2 New Member

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    How's the kick from that thing?
     
  15. GunNut

    GunNut New Member

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    Not too bad considering its size. It actually weighs a fair amount and is ported; both of which help keep it under control. Its really meant for up close and personal...not really much for sights on it.
     
  16. Blackadder

    Blackadder Guest

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    .40 S&W brass is thinner than 357 sig brass. Same diameter, but totally different ammunition.

    If you get .40 brass and neck it around a 9mm, it will look just like a 357 sig bullet. It's highly probably you will have a kaboom if you fire it, though.