Sig 320, at what point is this a problem?

ut755ln

Rub some dirt on it
Full Member
Minuteman
Supporter+
Mar 24, 2011
402
201
Houston Texas
I have shot Glocks forever, I have a Gen3 34 and a Gen 5 34 that I use for 3 Gun and for some USPSA (Production and Carry Optic). I have seen more and more Sig 320s, especially in Carry Optic so I picked one up and here is my question.

I have 250 rounds through the pistol. I have shot Speer 147, Hornady 124s and Federal 124s. In the 250 rounds I have 18 failures to feed/eject. I have used multiple magazines (six) and it still happens. Is this a common problem with the 320? Is there some kind of break in period I am not aware of? Do I need to use a hotter ammo to get it to function properly?
 

atomic41

Sergeant
Full Member
Minuteman
  • Apr 4, 2013
    2,548
    5,231
    I have one of the early first run P320s and never had even one hiccup. This is years of shooting it a lot.

    EDIT to add: This is a wide variety of ammo and only Sig mags
     
    Last edited:
    • Like
    Reactions: Milf Dots

    Milf Dots

    Major Hide Member
    Full Member
    Minuteman
    Oct 21, 2019
    1,820
    2,787
    Maybe your brand new p320 has a bad extractor or something else is out of spec. It happens. Call Sig CS and send it in. Sig CS is pretty good.

    I've seen at least a couple new pistols from every major maker fail because nothing is perfect.
     
    • Like
    Reactions: Simonsza1

    Milf Dots

    Major Hide Member
    Full Member
    Minuteman
    Oct 21, 2019
    1,820
    2,787
    A thought- could it be you're touching the slide lock during cycling and you don't realize it? Using a Glock style thumbs forward shooting grip technique on a p320, without adjusting for the different ergos, can cause the issues you report.
     
    Last edited:

    hlee

    Sergeant
    Full Member
    Minuteman
  • Jul 14, 2012
    7,995
    10,387
    44
    TX
    My gun works. Does not mean yours is not broken.

    18/250 is a 7% failure rate. Put another way... The standard magazine for the Sig 320 holds 17 rounds. 250 rounds equates to just shy of 15 magazines. 18 failures in 15 magazines is more than one per mag. Would you expect or accept that level of reliability? Yeah, me either.
     

    W54/XM-388

    Online Training Member
    Supporter
    Full Member
    Minuteman
    Supporter+
  • Oct 1, 2005
    11,869
    23,918
    Dallas, TX
    Call up Sig, get it sent back to them and most likely the problem will be resolved.
     

    BCP

    Lt. Colonel
    Full Member
    Minuteman
  • Dec 4, 2008
    6,983
    2,003
    121
    CA
    I had two, a p320 and p320 x something. One shot 2-3ft low and the other was good all around but not outstanding. The defective one was fixed by sig and the other I sold and bought a Glock 19 with night sights.

    Honestly I do not put them in the same class as the older sigs ala p226, 228 etc.
     
    • Like
    Reactions: Edgecrusher

    JimmyJr

    Makin Chips
    Full Member
    Minuteman
    Sep 20, 2021
    1,246
    1,035
    Idaho
    At what point is this a problem?
    If you have more than a couple failures in 250 rounds you have a problem somewhere.
    If you tried more than one type of reputable factory ammo in factory mags then there is a problem with the gun.
     
    • Like
    Reactions: BCP

    redneckbmxer24

    Merica!
    Supporter
    Full Member
    Minuteman
    Supporter+
  • Jan 15, 2005
    8,929
    4,522
    Gulf Coast, FL
    I had a sample of 7 total P320’s and while I didn’t put thousands of rounds through them they pretty much all got 300-500 rounds through them and were 100% reliable with a mix of 115gr FMJ (fiocchi, CCI/Speer) and 124 and 147 HST.

    My issues were mags rusting and then Sig being dicks about 4x 17rd mags that would barely hold 16 rounds (you couldn’t even insert them with the slide home) even after leaving them loaded and cycling them a bunch of times.
     
    • Like
    Reactions: BCP

    ut755ln

    Rub some dirt on it
    Full Member
    Minuteman
    Supporter+
    Mar 24, 2011
    402
    201
    Houston Texas
    Thanks everyone, I contacted Sig yesterday and I am sending the gun and mags in to their customer service. When I get it back, I will update with what they fixed.
     

    Clayman

    Gunny Sergeant
    Full Member
    Minuteman
    Jul 29, 2021
    635
    721
    AZ
    I have a x5 legion and an Agency build with a comp I put together. Neither have had a hiccup of any kind. Haven't cleaned the Agency in like 800 rounds.

    I've used blazer, ae, pmc, etc tested some hst, underwood speer gold dots, underwood Lehigh rounds and black hills honey badger. All functioned.

    I have 3 legion mags and five 21 rounders. No issues.

    I'd definitely be sending that thing back.
     

    ut755ln

    Rub some dirt on it
    Full Member
    Minuteman
    Supporter+
    Mar 24, 2011
    402
    201
    Houston Texas
    Thanks everyone, I contacted Sig yesterday and I am sending the gun and mags in to their customer service. When I get it back, I will update with what they fixed.
    As an update, the pistol came back to my FFL. Sig was responsive and the paperwork said that they replaced the extractor and tested it before sending back. Sig CS was easy to work with, I will shoot it this weekend.
     
    • Like
    Reactions: JimmyJr