glock 22/23/27 .357 conversion

glock 22/23/27 .357 conversion

This is a discussion on glock 22/23/27 .357 conversion within the Defensive Carry Guns forums, part of the Defensive Carry Discussions category; so any of you have a glock .40 with a .357 barrel? do you need to buy .357 mags or can i use the .40 ...

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Thread: glock 22/23/27 .357 conversion

  1. #1
    Senior Member Array Fausty's Avatar
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    glock 22/23/27 .357 conversion

    so any of you have a glock .40 with a .357 barrel? do you need to buy .357 mags or can i use the .40 mags since the shell casings are the same size? gonna order up a barrel here pretty soon.
    Last edited by Fausty; October 13th, 2012 at 01:31 PM.
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    As far as I know, you may use your .40 cal for .357 sig.
    That is how it is for the M&P, and other makers as well.
    I bought an M&Pc with a .357 sig barrel, and the seller had a .40 cal as well.

    As you said, the case size is the same.
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    Senior Member Array Fausty's Avatar
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    cool. didn't want to waste the money if i don't have to. can't see why there should be a difference.
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    I only have 9mm Glocks, but have been told that it depends on the mags. Depending on when made, the followers may need changing to work reliably.

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    VIP Member Array blitzburgh's Avatar
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    My G32 (357sig) that I bought slightly used came with 4 mags.. 2 357sig and 2 .40 - haven't had any problems at all using the .40 mags in it.

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    Senior Member Array Fausty's Avatar
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    ok thanks guys. i will try my .40's out. if i have issues i will order some .357 mags.
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    In my experience you only need mags when changing to 9mm. I don't routinely run the .357 barrel in my 23 but have put maybe 750 rounds through it and the .40 mags have never had an issue.
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    Thumbs up

    I've been happy with my G 40's since about 1991. The 2nd Gen G23 is still my favorite G40.

    But! Swapping barrels in my G35 tells the tale: accuracy is much much better in 357Sig. 9mm is also sweet. The stock 40 barrel isn't bad, but not nearly as good as the 357Sig. My Gen4 G31 shoots better for me than any of the 3rd Gen G22's I've shot.

    I don't know why. but it is hard to argue with the targets.

    Recoil is better in 9mm & 357Sig than 40S&W. Overall handling is better with 357Sig vs 40S&W.

    And S&W and Sig have sold pistols with both barrels. I believe Springfield has also done this. Glock has told me the 40 & 357Sig pistols differ only in the barrel diameter and slide markings. Being able to convert seems like a big plus to me.......

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