SIGforum.com    Main Page  Hop To Forum Categories  SIG Armorer    Sig P229 Malfunction - RESOLVED

Moderators: Chris Orndorff
Go
New
Find
Notify
Tools
Reply
  
Sig P229 Malfunction - RESOLVED Login/Join 
Junior Member
posted
First a hello! This is my first post but I've been reading for awhile.

I have a Sig P229 Nitron. I purchased it a couple months ago unfired, but the pistol was manufactured April 2012.

I have fired about 3000 rounds through it, and clean it regularly. I use Shooter's Choice grease on the rails and wear points, and Rem Oil on everything else. I have had no real problems until tonight.

Gun began malfunctioning after about 40 rounds. Round fires, slide racks and ejects brass, moves forward and then stops about 1/8" before closing. Gun will not fire. I eject the round drop the magazine and reload. Gun fires 1 to 3 rounds and then slide stops short again. I applied pressure and tried to force the slide forward without luck.

I swapped magazines and ammo and this had no effect on the issue. I removed the slide, put it back on, cycled it and could see nothing wrong. Slide closes normally when empty. Have now taken the gun apart and just don't see anything out of the ordinary.

Only mods to the gun are grips and an 18 lb hammer spring installed 2000 rounds ago.

I am completely stumped! I have an IDPA match in the morning. Does anyone have any ideas?

Regards,
Don

This message has been edited. Last edited by: dcroxby,
 
Posts: 4 | Location: Boise, ID | Registered: March 29, 2017Reply With QuoteReport This Post
Member
posted Hide Post
Ammo


“So in war, the way is to avoid what is strong, and strike at what is weak.”
 
Posts: 6255 | Registered: October 14, 2004Reply With QuoteReport This Post
Member
posted Hide Post
Quick check pull barell and see if the rounds drop freely into it.


“So in war, the way is to avoid what is strong, and strike at what is weak.”
 
Posts: 6255 | Registered: October 14, 2004Reply With QuoteReport This Post
Junior Member
posted Hide Post
Ammo drops into the barrel easily and freely. I had two kinds of ammo with me, Winchester and Remington and both had the issue. I have shot nearly 500 rounds of the Winchester in the last few weeks as well.

I have just spent the last 10 minutes working the slide and dry firing. Absolutely no issues unloaded. I cleaned the whole gun again and reassembled. I'll take her to the match in the AM and see what happens. Thanks for the replies!
 
Posts: 4 | Location: Boise, ID | Registered: March 29, 2017Reply With QuoteReport This Post
Member
posted Hide Post
I'm still voting ammo, I assume both are cheap stuff. Do you have access to anything with known zip like NATO spec Winchester.


“So in war, the way is to avoid what is strong, and strike at what is weak.”
 
Posts: 6255 | Registered: October 14, 2004Reply With QuoteReport This Post
Lead slingin'
Parrot Head
Picture of Modern Day Savage
posted Hide Post
A couple suggestions:

- Possibly a worn recoil spring going solid or binding? Maybe try a replacement spring to see if problem persists. This is an unlikely cause, but relatively quick to check.

- Check the grip plate screws tightness. Pull the grip plates off and see if the trigger bar is intact or damaged. See if you can see any broken parts or parts encountering resistance. As the gun dry fires successfully I wouldn't expect there to be any problems, but I'd check to be certain.

- You mentioned that the gun dry fires successfully, but you didn't mention whether this is true both with and without an unloaded magazine in place.

- At this point with the little info we have to work with, I'm leaning towards an extractor or breech face issue. Possibly a damaged extractor or extractor spring, something preventing the failed rounds from consistently sliding up the breech face. Check the breech face for any burrs or carbon build up. Another possibility is O.O.S. ammo rim thickness causing the same issue. The only problem with this theory is that you stated that you used two different types of ammo that produced the same stoppage and it seems exceedingly unlikely that you would be unlucky enough to run into the same problem with ammo from two different manufacturers... but I'd check anyways to work down the troubleshooting tree.

Other than that we need more info... which means that you need to do more testing before you can provide it.
 
Posts: 3571 | Registered: August 21, 2006Reply With QuoteReport This Post
That's just the
Flomax talking
Picture of GaryBF
posted Hide Post
What grips did you put on the gun, and when? The slide may be getting hung up on the disconnect tab on the trigger bar. Have you cleaned that area?

Have you cleaned under the extractor claw? A build-up there may inhibit proper feeding.
 
Posts: 10706 | Location: St. Louis, Missouri | Registered: February 04, 2008Reply With QuoteReport This Post
Member
posted Hide Post
Did you install the recoil spring correctly after cleaning?

One end of the spring will fit tighter on the guide rod than the other.

The tighter end goes on the guide rod first.

If the loose end goes on first the spring can possibly bind on the guide rod as it extends.
 
Posts: 1208 | Registered: October 01, 2013Reply With QuoteReport This Post
Junior Member
posted Hide Post
Cleaned it thoroughly again last night. I paid particular attention to the feed ramp and extractor claw. I shot about a hundred rounds this AM and had 3 malfunctions. An improvement.

Recoil spring is installed correctly.

Grips are Hogues and have been on since shortly after I purchased the gun. I looked for any wear marks on the inside of the grips and didn't see anything.

I appreciate the replies. I am going to send it in to Sig on Monday. I was planning on getting a short reset trigger installed anyway so I'll have them look at the feed problem too.

Consensus at the match this AM was that it has to be extractor related.
 
Posts: 4 | Location: Boise, ID | Registered: March 29, 2017Reply With QuoteReport This Post
Lead slingin'
Parrot Head
Picture of Modern Day Savage
posted Hide Post
If the extractor claw appears undamaged and moves freely I'd suggest removing the slide and taking all the failed rounds that produced a stoppage and try manually sliding them up the breech face and behind the extractor claw. Check for proper tension or if there is excessive resistance. If you have any "known" good rounds, or even casings that cycled successfully, try the same thing with them for comparison.

Please let us know what SIG says on the issue.

Welcome to the forum and good luck with a fix!
 
Posts: 3571 | Registered: August 21, 2006Reply With QuoteReport This Post
Junior Member
posted Hide Post
Figured it out. It was ammo.

Went to the range tonight and bought a box of Freedom Munitions 115 grn FMJ. Shot 40 without a problem. Switched to Winchester ammo and had 7 fails out of the next 50 rounds. Each time the gun failed to go back into battery I ejected the problem round and put it aside.

Loaded those 7 rounds into a mag and they failed every time they cycled. Pulled the barrel and dropped each of them in. They went in easy but all protruded slightly. Good rounds sit flush.

I have shot over 400 rounds of this same ammo without an issue, so it must just have been a bad lot.

After some thought I remembered that I had found some loose rounds in the bottom of my gun bag after a shoot. I must have put them back into the wrong box. That explains why I had multiple brands failing.

Sig did not fail, the ammo did!

I called Sig this AM and they were puzzled but agreed to look at it and sent me a shipping label via e-mail. They suggested I try a new brand of ammo just to confirm. Still sending the gun into Sig for a short reset trigger kit.

Thanks again for the replies!
 
Posts: 4 | Location: Boise, ID | Registered: March 29, 2017Reply With QuoteReport This Post
Freethinker
Picture of sigfreund
posted Hide Post
Thanks for the update. It's always very good to learn how these things turn out.




“Most men … can seldom accept the simplest and most obvious truth if it … would oblige them to admit the falsity of conclusions … which they have woven, thread by thread, into the fabrics of their lives.”
— Leo Tolstoy
 
Posts: 36902 | Location: 10,150 Feet Above Sea Level in Colorado | Registered: April 04, 2002Reply With QuoteReport This Post
Member
Picture of Nipper
posted Hide Post
Good job! I would have placed money on something mechanical. Is the Winchester the notorious WWB (Win White Box)? If so, it has a long and sordid history.


______________________
An expert is one who knows more and more about less and less until he knows absolutely everything about nothing. --Nicholas Murray Butler
 
Posts: 3820 | Location: Northeast | Registered: June 29, 2006Reply With QuoteReport This Post
Member
posted Hide Post
quote:
Originally posted by dcroxby:
Loaded those 7 rounds into a mag and they failed every time they cycled. Pulled the barrel and dropped each of them in. They went in easy but all protruded slightly. Good rounds sit flush.

That's a good check for carry ammo. I always make sure my carry rounds drop in and out of the barrel easily. I'll now check for flushness as well.

Ian


"Once is happenstance, twice is coincidence, three times is enemy action." - Ian Fleming
 
Posts: 499 | Location: MA | Registered: March 08, 2003Reply With QuoteReport This Post
  Powered by Social Strata  
 

SIGforum.com    Main Page  Hop To Forum Categories  SIG Armorer    Sig P229 Malfunction - RESOLVED

© SIGforum 2017