New 9mm 2.0 double feeds

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nanney1

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Back at the range today and I experienced two more double feeds. Case was stuck in the chamber with another round trying to load. Exactly as described in a previous thread:

http://smith-wessonforum.com/smith-wesson-m-p-pistols/580639-fte-new-m-p9-2-0-a.html

The first time it happened a couple of weeks ago the WWB 115 grain was suspected. I have since switched to Winchester NATO 124 grain. I now have between 350 and 400 rounds through this pistol and have now experienced 4 double feeds.

This is a range gun so no worries as far as a carry or home defense pistol. I can keep shooting it. However, I plan to try IDPA this year, and I can't have this problem going into a match as this is the pistol I plan to use.
 
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Keep trying other brands of ammo. I have a very ammo picky Shield 9mm. It's had way too many failures to eject. The FMJ round that has been the most reliable in it is Speer Lawman 124g. I had to try many brands (including Win NATO) before I settled on Lawman. Oddly enough, my Shield has been 100% reliable with two self-defense rounds, Hornady Critical Duty 135g +P (362 rounds), and Federal HST 147g (225 rounds). But I'm guessing you won't be willing to shoot SD rounds in IDPA. :eek:
Good luck!

PS - It's best to continue posting updates to your original thread rather than starting a new thread each time you have something to report. That way you avoid getting redundant responses.
 
1. Rough chamber.

2. Chamber out of spec.

3. Extractor problem.

If this gun is new, I'd send it back to Smith. A M&P is a duty-grade gun and should run without extraction failures.
 
I'd contact S&W and see about sending it back. I'm not a big fan of Winchester practice ammo (their duty ammo is awesome) but it seems too often to just be ammo. S&W should be able to fix it. I wouldn't be OK with that level of reliability, and it's not consistent with what I've seen with good examples.
 
I've put a few thousand of rounds through my Shield 1.0 mostly Winchester practice 115 grain. Never had failure with any ammo. Federal, CCI, and Whichester all work great.

I would call S&W and see what they have to say. This pistol should just work.
 
I'll call S&W, but I'd really like to try some different ammo and see. I thought the Win NATO would be an upgrade over the WWB. Maybe not???
 
The WWB Nato is a higher velocity/pressure (1140fps) ammo I believe. Perhaps you have a defective recoil spring assy? If you decide to change anything in an attempt to diagnose the problem, I would change the recoil assy first.
 
I will say that the WWB that I used is from the 200 round value packs from Walmart. The Win NATO I have are from two sources. I ran Win NATO last week that I purchased from PSA in the individual 50 rd boxes. It ran fine with no failures to extract. However, the Win NATO that I ran this week with two failures was from a 150 round pack, but it was purchased from Walmart.
 
It's always been a magazine issue when I have double feeds.
 
Just talked with S&W Customer Service and described the problem. Didn't ask any questions, or try to troubleshoot, or ask about ammo. They were going to send me a shipping label, but I didn't have the serial# for the pistol. So, I'll have to call back if I decide to ship it to them. They only wanted the pistol, no mags or other accessories?

Also told me I could ship it to them directly without using an FFL? Is that right? I think she said Fed Ex could ship complete pistols?
 
That is correct. They'll send you a label. Box it up well and drop it at an official ship center for the shipping company (not a box store that has shipping pickup). Make sure you get a receipt just to be safe. S&W customer service for warranty stuff has been really good in my limited experience.
 
I've called S&W back with the serial # and they've emailed the shipping label. Three to four week turnaround was what they told me. Now, the dilemma... go ahead and ship it or wait and try out some different ammo first?
 
nanney1 said:
I've called S&W back with the serial # and they've emailed the shipping label. Three to four week turnaround was what they told me. Now, the dilemma... go ahead and ship it or wait and try out some different ammo first?
Click to expand...

Ship it. Save your ammo for when it returns. Shooting isn't as cheap as it used to be.

Sounds like a chamber or extractor problem to me.
 
swsig said:
Keep trying other brands of ammo. I have a very ammo picky Shield 9mm. It's had way too many failures to eject. The FMJ round that has been the most reliable in it is Speer Lawman 124g. I had to try many brands (including Win NATO) before I settled on Lawman. Oddly enough, my Shield has been 100% reliable with two self-defense rounds, Hornady Critical Duty 135g +P (362 rounds), and Federal HST 147g (225 rounds). But I'm guessing you won't be willing to shoot SD rounds in IDPA. :eek:
Good luck!

PS - It's best to continue posting updates to your original thread rather than starting a new thread each time you have something to report. That way you avoid getting redundant responses.
Click to expand...

I have also had excellent results with Lawman 124 gr. Also Fiocchi 124 grain FMJ; both factory loads not reloads.

I've run 1 mag of Federal 147 gr HST thru it.

I have yet to have a failure of any kind!
 
I vote for a magazine issue. Mark your mags and then note which ones are the issue. Send the bad mags back to Smith. I'd guess it's the mag lips but I guess it could be the follower too. If you send the gun back to Smith I'd send the mags back with it. Make sure you note in the letter that the mags are included.
 
Last edited:
This is not a magazine issue. It is a failure of the extractor to retract the round from the chamber which could have several causes from bad ammo to bad extractor tension or construction, to a damaged, pitted, dirty, or debris-obstructed chamber.

I'm with the OP in sending it back to S&W. Let them look at it and when it comes back check it with various ammo. I'd rather have them go over it than experiment with different ammo and more time and money in the hope it Works. The M&P is a great design and should work just about 100% of the time with all but horrible ammo.
 
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