Update 4 at Top - 4" M&P 10mm IT WORKS!

[2000Z-71]

Update 2 at top.

 

[kstewart61]

I just purchased the new equalizer and the springs in the mags are super strong getting the last three rounds in using a maglula is tough. My buddy went shooting with me he has the shield plus which uses the same mags and what a difference between them. The first time I loaded the 15 round I didn't count and I only loaded 13 very difficult to load the last few sure it will get better.

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[BSA1]

How many rounds have you shot through it?

 

[kstewart61]

As of today 350 no issues at all.

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[Mike SC Hunter]

Once ya'll and S&W get all the bugs worked I'll probably buy one. For now my 1006 and 1911(10mm) flawlessly fill the bill.

 

[Paul in Nevada]

If it's any consolation, the guys over at SigTalk are having similar problems with their P320 10's.

 

[The Mighty S&W]

I am a huge fan of all things Smith & Wesson, and I have had quite a bit of trigger time with 10mm handguns. I would very much like to add a 10mm M&P to my collection of pistols, but with all of the reports of problems I simply can’t bring myself to do it. It just doesn’t seem to make any sense that Smith & Wesson can’t get these pistols right.

Glock has been selling the model 20 and 29 for a long time now, and nearly everyone who’s owned one has nothing but great things to say about it. I’ve also seen a lot of positive praise for the Springfield Armory polymer pistols in 10mm. Unfortunately, I have no desire to buy a Glock or a Springfield. I want a Smith & Wesson. I just don’t want one that can’t be trusted to work reliably. It is very disappointing to see that people are still having all of these problems with their 10mm M&P’s, yet every time you turn around, S&W is announcing the release of some new pistol.

I’d really like to see them slow their roll, and address the shortcomings in the products they’ve already released, rather than continue to rush half-hearted designs to the market only to further tarnish their once great reputation. Fix the second-to-last round stovepipes on the .380 Shield EZ. Fix the trigger on the CSX. Fix the reliability issues with the 10mm M&P. Then, I’d be more excited about new stuff.

Sorry to hear that you’re still having trouble. I’d love to see these issues resolved so that I can buy an M&P 10mm for myself.

 

[Acroyer]

I just took my new M&P 4" 10mm to the range. I had heard all kinds of stories about reliability problems with full power rounds, so I replaced the magazine springs with Wolff plus power mag springs meant for the 45 acp.

I didn't have a single failure to feed using both Underwood 180gr range and hollowpoint ammo. I did have an unfired cartridge ping off of my forhead while firing, though. Only happened once in about 200 rounds of ammo. Was a surprise, to be sure. The spent casing ejected, then a live one was flung straight back to hit me square in the head. Somewhere in the middle of the magazine.

Mine was shooting very low at 7 yards; printing 3-4 inches lower than point of aim. I found that if I split the forward dot with the top of the read sight, it goes right where it should. The extra tall sights really bug me, and I am not sure I'll put a red dot on it. I need to figure out what size sights to replace them with.

Oh, and I have a 22 pound spring on order, but other than that one mishap, things went well with the stock recoil spring.

I forgot to mention that with the plus power mag spring, I can only get 14 rounds in the mag.

 

[2000Z-71]

Update 3 at top.

 

[scooter123]

I suspect that you are battling a Magazine design problem. It's a pure guess but I suspect feed lips that are about 1/16 inch too short for the 10mm length. Unfortunately you don't have the option I use for this type of problem by purchasing Wilson Combat magazines. One thing you could try is to find a gunsmith who has a TIG welder and a willingness to do some modification to one of your magazines. If that one works properly then give S&W a call and explain the solution you have found to them. Hopefully that will push them into modifying the tools for these magazines to provide longer feed lips. If not post the solution here for the whole world to see.

BTW, my BIL was JAG at Eagle River for 6 years, when you folks get cold it truly is very cold. My sister once took a pot of boiling water onto the deck and turned it over from waist height and not one single drop of water hit the deck. On the plus side the scenery in the summer is fantastic.

 

[armorer951]

I'm pretty sure you may have already seen this video, but it sounds like the problem you're having is widespread among owners.

One of the interesting things they mentioned is that the guns seem to feed .40s&w ammunition without issue, so the problem may be linked to the follower/feed lip design. Because of the type of malfunction you are having, the problems could logically be attributed to the magazine, the mag spring, or the follower.
Please let us know if you get this sorted out. Thanks

One other solution provided by one user was installation of Springer Precision magazine springs.

Carter

[ame]https://www.youtube.com/watch?v=DXb8_MNLvPk[/ame]

 

[DAVE401]

I have a 4.6 that I also had the infamous nose up jams with full pressure underwood loads, I did the mag spring and recoil spring, polished the feed ramp, it helped but I still had occasional nose up jams, I reinstalled the original mag spring but kept the heavier recoil spring. I made one little modification to the mag and it's been 100% ever since. 220gr underwood no problem. What I did was take a piece of 220 grit sand paper and carefully sanded the inside of the mag feed lips perpendicular to the bullet case feed direction to roughen the inside surface , that increases the case to mag lip friction enough to keep the round where it should be during recoil. It has been 100% reliable with hundreds of underwood rounds through it. hope somebody else tries this I would like to know if it works for you also.

 

[Anton Chigurh]

I haven’t seen a lot of new posts from people saying they have problems with their 10 mms.
Does that mean the factory is getting things straightened out, or does it just mean people stopped buying them for now?

 

[kstewart61]

This is crazy smith needs to make the necessary repairs to the pistol that he purchased. I know Walther has better response times than Smith does.

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[DAVE401]

It's not only S&W, Chuke on YouTube tested a new Gen 5 Glock 20 and he was getting nose up jams using Underwood 200gr hardcast. I've heard of the Springfield XDM and new Sig 10mm also having problems.
The problem originates from having factory 10mm ammo that the majority of is loaded to 40 S&W velocities and gun manufacturers are building for those velocities. I think the crazy part is that if they built to run full 10mm it would still run the low velocity stuff. ***!

 

[2000Z-71]

Update #4 at top

 

[LVSteve]

So if nothing has changed, why does it suddenly work?

 

[2000Z-71]

So if nothing has changed, why does it suddenly work?

I have no idea. Additional time for the spring to take set? The last time out prior to this I literally shot 3 rounds through it, had the jam, cleared it and put it back in the range bag in disgust. Definitely not a thorough evaluation after I had done the polishing.

Sometimes in life you don't question things and go with them.

 

[Sfboldeagle]

I went down the 10mm road and was dissapointed. I bought a 4.6 new in April, expecting it to be a good gun, because the 4.6. However through 2 trips to the range and about 400 rounds it was failure after failure. Sent it back to S&W and after zero communication from Smith(only Fedex that it was coming) I got it back. 100 rounds of Freedom Munitions(yes its weak) and several failures on the 13/14/15 round. Magtechs (180 at 1200 per box) were flawless. S&B (180 at 1230) were also flawless.

The paperwork with the gun on return showed they reamed the barrel and chamber. However they also changed the recoil spring. There is no longer an Orange dot on the spring/assembly, but they did not admit that. The spring by my calibrated hand is noticably heavier. Maybe they are tinally making changes and these guns will be right. I got information from here and wanted to post my experience. Maybe it will help others

 

[WVDeere]

I went down the 10mm road and was dissapointed. I bought a 4.6 new in April, expecting it to be a good gun, because the 4.6. However through 2 trips to the range and about 400 rounds it was failure after failure. Sent it back to S&W and after zero communication from Smith(only Fedex that it was coming) I got it back. 100 rounds of Freedom Munitions(yes its weak) and several failures on the 13/14/15 round. Magtechs (180 at 1200 per box) were flawless. S&B (180 at 1230) were also flawless.

The paperwork with the gun on return showed they reamed the barrel and chamber. However they also changed the recoil spring. There is no longer an Orange dot on the spring/assembly, but they did not admit that. The spring by my calibrated hand is noticably heavier. Maybe they are tinally making changes and these guns will be right. I got information from here and wanted to post my experience. Maybe it will help others

When I sent my 10mm to S&W it returned with a new recoil spring also. But no mention of it in the paperwork. Original also had a red dot/ring on it and the new one doesn’t.


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