Sig P938 problems....help

[Cali-Preacher]

Ok so I have a Sig P938. I took it out today and started having some malfunctions. When I attempt to rapid fire the gun, it will cycle a couple through, then it will cycle a new round into the chamber but it will not cock the hammer back to fire the round it just put in the chamber. It's like the slide cycles far enough to chamber a new round but not quite far enough to cock the hammer back and reset the trigger. So I end up having a live round in the chamber but no trigger reset or cocked hammer to fire it. Sounds crazy, I know, but it did it like 3 times today? What so u guys think? Ever experienced this? I need help...I've had lot of trouble with this gun.

Sent from my SM-G920V using Tapatalk

[slomofo]

Ammo probably doesn't have enough charge to move the slide back all the way. Try a heavier grain bullet or different ammo. My P938 has never had this problem but seeing how beefy the recoil spring is compared to similar guns like the Colt Mustang & Kimber Micro, I could see how the recoil spring may affect cycling.

[flyinryan]

Not at all giving you a hard time. And I'm 99%sure it's not the case but.. Is it possible in the middle of your rapid fire you start to limp wrist the pistol? That can cause short stroking.

[SkyHawk]

What ammo are you running (exactly)? Don't tell us about your problem without telling us about the ammo, otherwise you're asking us to put together a puzzle with half the pieces missing.

[BoJackUSMC]

Yes, what type of ammo?

[Cali-Preacher]

Yes, what type of ammo?

Winchester white box from Wal Mart..115 gr fmj

Sent from my SM-G920V using Tapatalk

[Cali-Preacher]

Not at all giving you a hard time. And I'm 99%sure it's not the case but.. Is it possible in the middle of your rapid fire you start to limp wrist the pistol? That can cause short stroking.

It is possible, as anything is but I don't think that's the case. I am a fairly experienced shooter so I don't feel that's it. I've never had that issue before, but again not saying it couldn't be. At this point, I don't know.

Sent from my SM-G920V using Tapatalk

[BoJackUSMC]

Hummm

Winchester white box factory good to go usually

[SkyHawk]

That ammo should be good but try running 100 rds of 124 or 147 through it. Also maybe leave the slide locked back for a week or two to take the edge off the recoil and hammer spring.

[gringo m]

Best of luck. I have run 6 different ammo's through mine without a single hiccup. Great little gun.

[Win231]

Winchester White Box is one of the factory rounds that caused malfunctions in Gen. 4 Glocks. The other is Federal "Champion."

Try 124 Gr. ammo.

[Loopwell]

As stated, try hotter loaded ammo

[erik_26]

Limp wristing is what comes to mind first.

It may not seem like it, but if you don't really hold a semi-auto firmly, your wrist will absorb the recoil energy enough to cause this problem.

Next, how clean in is your P938? Do you have lots of range sessions with no cleanings?

How about lubrication? Are you a grease guy or oil? I prefer oil because the grease can tend to attract and retain grime which could affect slide movement.

Finally, or maybe first, what is the brand of the ammunition? If one of the major manufactures (Winchester, Federal, Remington, Hornady, Blazer, Fiocci.... etc) then it probably isn't the problem. However, major manufactures aren't free from error. If you have a second unopened box, then try some of those.

However, in closing, if you aren't having issues with non-rapid fire, then, I circle back to limp wristing is probably the cause.


Let us know what you find.

[GucciLoco9]

the p938 is known to have issues. just send it to sig and you will be fine.

they already have some fixes for the problems your stating

[Euphoria526]

Not at all giving you a hard time. And I'm 99%sure it's not the case but.. Is it possible in the middle of your rapid fire you start to limp wrist the pistol? That can cause short stroking.

Thanks for reminding me...
OP your limp writing your gun like a glock. Manhandle that thing like a... Um...a man and get it working right. Sheesh with all these new gun owners you'd think they grew out of the hipster flannels.....