S&W M&P series: more RELIABLE in 9mm or .40?

Discussion in 'GSSF' started by calviroman, Feb 10, 2010.

Tags:
  1. calviroman

    calviroman

    Messages:
    146
    Likes Received:
    0
    Joined:
    Jul 3, 2003
    Location:
    NY
    Hi,

    I'm considering a S&W M&P full size. Can anyone speak as to, in general, which is more reliable in that design, 9mm or .40? I would ASSUME that because it was designed in the 2004-2006 time frame for (primarily) the US law enforcement market that it was designed around the .40 round (this is speculation).

    PS: Please dont turn this into a 9mm verses .40 thread. Only care about reliable function.
     
  2. Arcticfallen

    Arcticfallen HK Pistoleer

    Messages:
    10
    Likes Received:
    0
    Joined:
    Dec 24, 2009
    Location:
    Wisconsin
    Feel free to catch me on it if I'm wrong, but as far as reliability goes isn't that more about the handgun rather than the caliber?
    As far as caliber reliability, I have heard of a lot more .40S&W KB's because they run so hot.
     

  3. calviroman

    calviroman

    Messages:
    146
    Likes Received:
    0
    Joined:
    Jul 3, 2003
    Location:
    NY
    I think its both handgun and caliber. As an example, I think you could say that (generally) the 2nd and 3rd generation full size glocks (G17) were more reliable than the 2nd and 3rd gen .40 glocks (G22).
     
  4. G33

    G33 Frisky! CLM Millennium Member

    Messages:
    30,978
    Likes Received:
    7,600
    Joined:
    May 29, 1999
    Location:
    With G29
    .40 M&P came out first.
    Mine have been equally good...includes .45.
    This sampling is so small as to mean nothing.
    Two large departments I know of have the same results.
    That may mean more.
    :supergrin:
     
  5. Indy_Guy_77

    Indy_Guy_77 Thread Killer

    Messages:
    3,422
    Likes Received:
    1
    Joined:
    Dec 7, 2006
    Location:
    Indianapolis (The one in Indiana)
    Chances are very high that you'll not have any problems with either caliber choice.

    -J-
     
  6. chessail 77

    chessail 77

    Messages:
    135
    Likes Received:
    0
    Joined:
    May 27, 2009
    I have not heard or read of problems with either.
     
  7. glock2740

    glock2740 Gun lover.

    Messages:
    18,888
    Likes Received:
    19
    Joined:
    Jun 19, 2008
    Location:
    NW Ark.
    I have both and they have both been 100%. Only difference is caliber and capacity.
     
  8. Larry V

    Larry V

    Messages:
    1,474
    Likes Received:
    137
    Joined:
    Oct 19, 2009
    Location:
    Solon Ohio , Suburb of Cleveland
    I have both and no problems with either one!
     
  9. Lloyd-Xmas

    Lloyd-Xmas

    Messages:
    65
    Likes Received:
    0
    Joined:
    Nov 27, 2009
    In general it seems the 9 is usually more reliable than the 40, but in most guns the difference is slight. Doesn't stop me from owning 40.

    40 can be pretty tough on the gun though, and 9mm's will usually outlast their 40 counterparts, if longevity is a concern.
     
  10. calviroman

    calviroman

    Messages:
    146
    Likes Received:
    0
    Joined:
    Jul 3, 2003
    Location:
    NY
    Thanks. I personally prefer 9mm, but my main concern is reliability. It sounds like the 9mm M&Ps are OK.
     
  11. Spence

    Spence

    Messages:
    712
    Likes Received:
    0
    Joined:
    Dec 18, 2008
    Location:
    N.Colorado
    I have both as well and cant speak of any difference in reliability.
     
  12. remat

    remat

    Messages:
    2,049
    Likes Received:
    0
    Joined:
    Mar 19, 2006
    Location:
    Seattle, WA
    Was originally designed for the 40. Not that I think it makes any difference. I own a 9mm FS and it has been flawless since day one. Unfortunately, no 40 version for me to compare.

    But, I use it in training classes and a lot of first time female shooters try it. Feedback has been all positive on that specific pistol.
     
  13. mag318

    mag318

    Messages:
    122
    Likes Received:
    2
    Joined:
    Jul 23, 2007
    Location:
    Illinois
    The M&P was designed from the ground up around the .40S&W cartridge. I personally prefer it in 9mm or 45 but think it would be just as reliable in the calibre it was deigned for .40. M&Ps are my favorite striker fired pistols.