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shooting 40 cal in a 9mm Glock magazine?

Discussion in 'General Glocking' started by crazeeman13, Oct 27, 2012.

  1. crazeeman13

    crazeeman13

    34
    0
    Jan 18, 2009
    USA
    I know it is a strange question but has anyone ever shot 40 cal out of a 9mm Glock mag and how did it function?
     

  2. SJ 40

    SJ 40

    13,308
    2,984
    Jan 17, 2011
    Vermont
    There are some differences in Glock 9mm and 40 S&W magazines.
    The main distinction between them is the distance of the feed lips.
    9 mm: .325-.335
    40 S&W: .360-.370
    I don't see it working well if at all.
    SJ 40
     
  3. Not only what SJ 40 said but, doing so may mess up that mag for use with 9mm. Mags are cheap so why mess up a perfectly good one and then end up buying two mags instead of one? :dunno:

    $20-ish on line sometimes with free shipping. :wavey:
     
  4. barth

    barth six barrels

    6,358
    432
    Oct 7, 2011
    The Free Zone
    ???
    I've shot about 1500 9mm rounds through my G27 with
    a Storm Lake 40-9mm barrel and G26 mags without a single problem.
    Shot 200 Winchester Ranger 124 NATO FMJ +P a few hours ago.

    But I have not tried, or have any interest in trying, 40 out of a 9mm mag.

    Recommend using the right mags.
     
    Last edited: Oct 27, 2012
  5. JBP55

    JBP55

    9,639
    247
    Mar 4, 2007
    Louisiana
    I have seen people load 9mm in .40 magazines on several occasions on the firing line and have malfunctions until an Instructor corrected the problem. YMMV!
     
  6. ADK_40GLKr

    ADK_40GLKr

    2,337
    7
    Nov 14, 2010
    RFD NY Adks
    9mm in a .40 mag = Occasional malfunctions

    .40 in a 9mm mag = FREQUENT malfunctions

    (been there, tried that!)
     
  7. FFR Spyder GT

    FFR Spyder GT Ex-Gunslinger

    1,132
    2
    Apr 27, 2012
    Hog Jaw, Arkansas
    I have a LW 40-9 barrel for my G23 and I have fired several rounds of 9mm through .40cal mags but never .40cal in 9mm mags.
     
  8. jeep99011

    jeep99011 Back in the Sti

    19
    0
    Jan 31, 2003
    Central Illinois
    I have shot 50 rounds out of the 9mm magazines and they functioned fine. You can only fit 13 rounds of .40 in them and they bulge a little bit so inserting them into the grip makes for a tight fit.
     
  9. AustinTx

    AustinTx

    7,160
    1
    Aug 16, 2006
    Tx
    That is a great benefit, to owning Glock pistols. The mags are almost/always, cheaper than their competition. Check H&K prices some time.
     
  10. ca survivor

    ca survivor

    8,435
    57
    Dec 25, 2011
    Florida
    did long time ago, picked 17 mags while shooting a 22, it worked fine, the only thing I noticed it was hard to load the mags, didn't realize the mistake until I got home, now mags are mark....
     
    Last edited: Oct 29, 2012
  11. davsco

    davsco

    507
    0
    Feb 27, 2011
    well i guarantee that using g22/35 mags, loaded with .40, in a g17/34, does NOT work. don't ask me how i know...
     
  12. 1-2man

    1-2man Part Time

    4,631
    308
    Sep 28, 2006
    Detroit
    Just two weekends ago I showed up at the range with my Glock 35 and only had 9mm mags. I shot 200 rounds through it without a single issue. :dunno: (I don't see doing it any time soon, nor intentionally, but it worked that day.)