Sig P938 problems....help

[SoldierLife7]

Do you have the same issues with both of them?

[unusedusername]

Winchester White Box (also known as WWB), ammo is likely the issue.

WWB is loaded near the minimum pressures allowable for 9mm. A small little slide like in the 938 needs a really stiff spring to cycle correctly. A stiff spring requires a little oomph from the cartridge to work.

You can try federal white box if you are looking for something that is still less expensive but has a little but more powder to it. From there, try any NATO spec 9mm. It will still be within the pressure limit of 9mm, but it will be near the top of the limit as opposed to near the bottom.

Other folks has pointed to limp wristing the gun, however 1911 pattern firearms are not usually prone to failures of that sort mostly due to the heavier recoil springs they use. It is possible though.

[bshot]

Don't sweat it folks, looks like the gun is being sold (as new) anyways. No need to troubleshoot.

http://www.calguns.net/calgunforum/showthread.php?t=1129544

[enrique L]

Take it to Chaz CHeshire , he's a Problem solver...and MASTER gunsmith

[BigPimping]

I smell something shady here.

[Norcal_tom]

what i would do is sell the gun, not say anything about the problems, and buy something else.

[slomofo]

Whoever buys the gun, I have a feeling this may be the issue. uploadfromtaptalk1446436612538.jpguploadfromtaptalk1446436663760.jpg

With miniature 1911s, their downfall has always been in the recoil spring. Kimber suggests to change the spring every 500rds, Colt doesn't say anything about it, but they've been known to fail.

Sigs don't seem to have this issue and I think it's because they use a really beefy spring under a lot of tension; it feels more Gen 4 Glock than 1911. This is the first thing I noticed when I got the gun originally and commented about it on another forum. I think a lighter spring may solve any issues, but at the same time increase the chances of spring failure.



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[MarinRange42]

The only worry about his posts here are the absent and quite helpful comments to have mentioned he has two of them and it does not happen with the other. Seems like many chances to provide that comment and did not into the equation for troubleshooting. switching parts could have helped diagnose. I dunno...not my house.

[bsg]

tagged.

[c_Gio]

I have an Equinox...w the longer spring, came that way. No issues. Love this gun! Also did trigger job & added hogue grips. Great carry.

[erik_26]

With miniature 1911s, their downfall has always been in the recoil spring. Kimber suggests to change the spring every 500rds, Colt doesn't say anything about it, but they've been known to fail.

Really, 500 rounds? I hadn't heard of that.

Anyone go well beyond 500 rounds without a problem?

[c_Gio]

I am second owner of mine, no idea of round count. I've shot several hundred +

[slomofo]

Really, 500 rounds? I hadn't heard of that.

Anyone go well beyond 500 rounds without a problem?

1500rds through my Kimber Ultra before FTFs warranted the need for replacement. The Ultra is different from the gun I posted earlier, the Ultra has a captive spring on the guide rod which you change as a unit @ $40 a piece, of which I've changed three times. The gun pictured earlier is a Kimber Micro, no range report yet cause it's brand new but I think I'm going to get rid of it cause I don't like the sights, so I'll never know if that recoil spring will have issues.

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