Going back to an M&P!

[Rastoff]

I have seen this issue many times. What I believe to be happening is an issue with chamber size. This happens in shotguns a lot.

People often say that brand X won't work with steel. I'm not convinced that's true. What I think is happening has to do with tolerances.

Chambers are built to a particular diameter. In the case of the 9mm, I believe it's .389" diameter. However, nothing is absolute and the chamber can be larger than that. If it is, the casing might not rebound as expected after firing and this can cause sticking.

So, it is possible that it's a barrel issue and SIG will fix it. Give them a call and see what they say.

Even so, I'm glad you like your M&P.

 

[VikingDude]

I would never run steel ammunition through a pistol that I either needed to function 100% in a self defence situation or a competition. I have seen way to many extractors breake because of the steel casing. But I am very interested to hear how the M&P will handle long time use of steel ammunition.

 

[Georgian]

This fella has allegedly put 4,000 rounds, majority of which he says was steel case through his 2.0 5inch.
YouTube

 

[jamppp]

So, according to your posts you are willing to consult internet boards, "expert" friends, authors of articles, and even some "fella".
However you are unwilling to contact Sig?

This fella has allegedly put 4,000 rounds, majority of which he says was steel case through his 2.0 5inch.
YouTube

 

[Chief Wiggums]

To each his own , as they say.
In my case , if any given action was causing undesirable results , I would eliminate the given action.
Thats just me...
No need to over analyze

 

[Ruger Nut]

I would never run steel ammunition through a pistol that I either needed to function 100% in a self defence situation or a competition. I have seen way to many extractors breake because of the steel casing. But I am very interested to hear how the M&P will handle long time use of steel ammunition.

I own an MP 9mm that I bought back in 2007. I have shot thousands of SCA thru it, from new up until just recently, and NEVER had one hiccup!

 

[ThrowinRocks]

I've never had any issues using steel, brass or aluminum.
If SIG really made that statement then that would be the last SIG I would ever purchase.
Gun manufacturers are too lazy nowadays to make sure their guns are reliable so they just throw out a BS excuse hoping we accept their answer.
I'd send it back and make them fix it.
Anyone remember back when they'd send you the spent casings from test firing? I still have some and a few are steel cased So?

 

[Doug M.]

I'm not a fan of steel case ammo. I admit it. However, when one is talking about a combat firearm, the inability to use any round that is properly made in terms of dimensions, projectile, and powder is not even close to acceptable. Period. Given the well documented problems with the Sig 320 after its adoption by the Army, I would not get one under any circumstances. This is just another reason to not have one.

I have had more than one Sig. I still have a 239 9mm, which does not get used much. Given the history of crummy QC at Sig for the last 15 or so years (heavily discussed on a couple of fora and not really open to question), and my own experiences and perceptions (I ordered one a few years ago that was so bad when it came in the dealer rejected it), I would not own one. Anyone can make a lemon - look at the (relatively few) folks who have trouble with their Smiths and report that here, or the terrible problems with the Glock 22/23 along with some rare problems with their other models - but Sig is simply a no go.

 

[JHC77]

I recently came back to S&W M&P after about 11 years. About 4 firearms between 2 manufacturers and I'm settled on the 2.0 compact FDE 9mm with the 4" barrel (style 12458). Can't believe the changes since the 2008 M&P and the trigger is so much better.

 

[reccpd101]

The OP's first post was that he wanted to use any correct caliber he could find. The discussion about not using x,y, or z is irrelevant to him. It simply doesn't help him. I think of it like the rimfire guns that say don't dry fire. I don't dry fire them cause I won't buy them.

SIG says don't shoot steel case, fine I won't buy SIG. I have no problem with good correct maintenance as needed for the combination.

I have lived in areas where ammo choices weren't very varied at times before Amazon, etc.

 

[sandog]

I now have a M&P9 2.0 FDE with the Truglo FTX sights on the way and plan to provide a complete range report.

Good choice, OP. Make sure and give us that range report.
I like my 5" FDE MP9, the only thing I've ever shot better with were some high dollar 1911s.
I put Apex trigger parts and Tru-Glo sights on right away, this is the day after I got it, and it already has the Apex trigger and parts and TFOs.

Here it is at the range with my Mini-30 I Cerakoted in FDE (and Desert Sand).

 

[Georgian]

Well here she is (range report to follow later in the week):

 

[sandog]

Looks good, Georgian ! I see it already has the Tru-Glo sights.
My MP9 is dead on with 115 grain loads, 124's aren't bad, just a tad high.

 

[Georgian]

Well first range trip down. I put about 350 rounds through my new M&P today, without a single malfunction. I ran 200 rounds of brass FMJ through the handgun first (100 S&B 115gr and 100 Fiocchi 115gr), followed by 100 rounds of Tulammo. The handgun was only allowed to cool long enough to reload my five magazines, and first again. The sights are sighted for a combat sight picture, which I prefer. The first picture shows groups I fired at 15 yards. The top group was the first group I fired with Hornady 135gr Critical Duty. I probably could do better, given I was still learning whether it was sighted for a six o'clock or combat sight picture. The group directly below that was with the S&B and the right group was Fiocchi. The second picture shows a group shot at ten yard off hand with one of the brass FMJ loads. The trigger on this 2.0 is a very good factory trigger, with a short crisp break and short reset. The handgun is everything I expected it would be. All casing were ejected in a nice pattern 6-12 feet to my 3-4 o'clock.

 

[mrmike7189]

Me too

I do. I don't own any vehicles that won't reliably run on 87 octane.

Me too! I run cheap gas and cheap ammo. call me weird!

 

[Warpipes]

Hey yall. Back in December, I decided to try the P320 Carry, my first and only Sig. I fell in love with the gun, it is accurate and easy for me to shoot well. I shoot quite a bit of steel case 9mm, and have quite a bit on hand. I expect any handgun I own to be able to shoot it in an emergency and at the range. The P320 ran the steel case at first, but over the last few months, it has began to completely choke on steel. Although I ensured the extractor and it's components were consistently cleaned, the P320 no chokes on every other round of steel and fails to extractor every time. I installed a Lone Wolf extractor hoping this might solve the issue, but it did not. I also ordered completely new extractor parts from Sig to replace them all, but decided I no longer trust this gun with my life and do not believe sending it back to Sig would solve anything, as they will only tell me not to run steel.

As a result, I made the choice to go back to an M&P, as the GEN 1 and 2.0 I've had over the years never malfunctioned with any type of ammo I ran through them. I now have a M&P9 2.0 FDE with the Truglo FTX sights on the way and plan to provide a complete range report.

I split 1k case of steel for range ammo with my grandson. We've been doing that for 2 years. Never an issue. Thousands of rounds & my M&P 2.0 hasn't had a single problem.