Accuracy problem solved?? - MP-Pistol Forum

Accuracy problem solved??

This is a discussion on Accuracy problem solved?? within the MP Full Size Pistols forums, part of the Smith & Wesson MP Forum category; Been a while since I posted, been quite busy, and spending alot of time with my Glocks. I thought I would pick up another M&P ...


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Old May 8th, 2013, 08:12 PM   #1
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Accuracy problem solved??

Been a while since I posted, been quite busy, and spending alot of time with my Glocks. I thought I would pick up another M&P and give it a run.
I would say S&W has resolved the issues with the M&P barrel and accuracy. This is a M&P9 Ser# HBCXXXX brand new out of the box, not even cleaned. Was using 115 grain Blazer Brass at 20 yards supported. Needless to say this one will be staying with me for a while. Ran about 200 rounds through it, no issues, strong ejections. I can honestly say I forgot how nice the M&P felt as far as recoil and ergos.




TXPO
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Last edited by TexasPOff; May 8th, 2013 at 08:19 PM.
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Old May 8th, 2013, 08:47 PM   #2
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They are good indeed!
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Old May 8th, 2013, 09:35 PM   #3
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Love mine. Also nice shooting. Groups look good.
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Old May 8th, 2013, 11:35 PM   #4
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Nice. They are great handguns.
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Old May 9th, 2013, 05:49 AM   #5
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Nice shooting! Is Cold Bore Custom located in Houston?
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Old May 9th, 2013, 06:11 AM   #6
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The early unlocking issue that a few M&P9 owners noticed is actually fairly rare, sometimes ammo selection would exacerbate it, but more often than not is was an excuse for really bad shooting (along with the sights being "off"). You get another one and it seems to shoot better, which could mean they fixed it or that you didn't get a bad one this time.
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Old May 9th, 2013, 10:29 AM   #7
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Anybody noticed that some of the new M&P's have a slightly different finish on the barrel? Almost a dark gray.
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Old May 9th, 2013, 07:00 PM   #8
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Originally Posted by KRWeiss View Post
The early unlocking issue that a few M&P9 owners noticed is actually fairly rare, sometimes ammo selection would exacerbate it, but more often than not is was an excuse for really bad shooting (along with the sights being "off"). You get another one and it seems to shoot better, which could mean they fixed it or that you didn't get a bad one this time.
This actually my fourth M&P. First was a 40, had no problems with it accuracy was fine. Just got away from the 40.

The second, was an M&P 9, again no problems with accuracy, but did have the dead trigger issue. That cause some real heartburn with me since it occurred during some tactical training, left my confidence shaken in the fire control design. During my Armorers course at S&W, they knew about the issue, but at that time didn't have a fix.

Third was another M&P 9. It went 4k rounds brand new out of the box, without a cleaning. Again accuracy was fine, and no trigger issues. No issues of any kind. I simply couldn't shake the feeling of the previous trigger problem.

Now this is my fourth again M&P 9 and S&W has again improved the design by hollowing out the sear, reducing its weight. This should completely alleviate even the possibility of a dead trigger. At least in my mind it does.

So all things considered I have never had an M&P that didn't shoot well. This new example seemed to shoot as well as my others. I just figured with accuracy issue that had been talked about, I should share my results with my current production gun. Now the fun begins and this M&P as it will soon spend some time on my bench and have a little custom work done.

on a side note, I will measure the twist tonight and see if mine has the 1 in 10 twist.

TXPO

Last edited by TexasPOff; May 9th, 2013 at 07:03 PM.
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Old May 9th, 2013, 07:02 PM   #9
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Originally Posted by Bill in Tx View Post
Nice shooting! Is Cold Bore Custom located in Houston?
yes sir actually just outside of Houston, but close enough.

TXPO
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Old May 9th, 2013, 07:03 PM   #10
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Originally Posted by cheapsandwich View Post
Anybody noticed that some of the new M&P's have a slightly different finish on the barrel? Almost a dark gray.
The one I have HBCXXXX has a very deep dark finish on the slide and barrel.

TXPO
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Old May 9th, 2013, 08:01 PM   #11
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Originally Posted by TexasPOff View Post
yes sir actually just outside of Houston, but close enough.

TXPO
Yeah, I did a weird thing and went to their website. On Westheimer in Katy. I didn't even know it ran that far!
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Old May 9th, 2013, 09:24 PM   #12
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Quote:
Originally Posted by TexasPOff View Post
This actually my fourth M&P. First was a 40, had no problems with it accuracy was fine. Just got away from the 40.

The second, was an M&P 9, again no problems with accuracy, but did have the dead trigger issue. That cause some real heartburn with me since it occurred during some tactical training, left my confidence shaken in the fire control design. During my Armorers course at S&W, they knew about the issue, but at that time didn't have a fix.

Third was another M&P 9. It went 4k rounds brand new out of the box, without a cleaning. Again accuracy was fine, and no trigger issues. No issues of any kind. I simply couldn't shake the feeling of the previous trigger problem.

Now this is my fourth again M&P 9 and S&W has again improved the design by hollowing out the sear, reducing its weight. This should completely alleviate even the possibility of a dead trigger. At least in my mind it does.

So all things considered I have never had an M&P that didn't shoot well. This new example seemed to shoot as well as my others. I just figured with accuracy issue that had been talked about, I should share my results with my current production gun. Now the fun begins and this M&P as it will soon spend some time on my bench and have a little custom work done.

on a side note, I will measure the twist tonight and see if mine has the 1 in 10 twist.

TXPO
Hollowing out the sear?? this is the first i have heard of this.
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Old May 9th, 2013, 11:52 PM   #13
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Originally Posted by WashMP View Post
Hollowing out the sear?? this is the first i have heard of this.

The top sear is an older standard production sear. The middle one is the newest production sear with the space added, also note the radius on the contact point where the trigger bar rides. It closely resembles the Apex hard sear, which is the bottom sear in this photo. I heard about the sear changes prior to purchasing my new M&P. I contacted an LE rep at S&W who did verify the sear has been changed. He did not know the exact reasons for the changes, so we speculated about why it was modified.

I believe the radius was revised to give a better trigger break, and the space was added to reduce sear weight. Sear weight could have attributed to the dead trigger issues in the past. The problem was more common on pro series pistols, and ones with the Apex sear installed. Those sear were tooled steel compared to the MIM steel of the standard sears. Tool steel is heavier than the MIM steel thus creating more weight for the sear return springs to move. While we are talking micro grams i'm sure, it could have been enough to cause the sear bounce, or dead trigger in older model M&P's.

The first revision of the fire control system was to incorporate the larger sear springs. While this did all but eliminate the dead trigger issues, I have heard of it popping up on rare occasions. IMO this sear revision, reduces the sear weight which in turn reduces the weight the spring has to move. Thus even further reducing the chance for a dead trigger or sear bounce. It's all good in my book as far as I'm concerned, and again just shows S&W is always trying to improve on the design.

I have not torn my M&P down completely to verify if mine has the newest sear, but he did say the dot on the radius lobe indicates a current production sear. Mine does have the dot, so until I do a complete tear down I can only assume about my example.
The picture below was not taken by me.

TXPO
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Last edited by TexasPOff; May 10th, 2013 at 12:11 AM.
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Old May 10th, 2013, 12:25 AM   #14
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thanks for the pix. with the way the middle sear looks, it will shorten the reset. it looks a lot like the Burwell modded ones in the PDF, except the rear of the sear has the ledge.

I would love to get one to test out.
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Old May 10th, 2013, 01:01 AM   #15
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This new sear is an improvement over the previous versions. The break point is further back, the break is cleaner and the reset is shorter. It is a tad heavy, but it did not cause any issue with shot placement for me. I would prefer a hair lighter, but I can live with it. Overall the new trigger set up is much improved. It does have an audible and tactile reset. I would place it between a 1911 and a Glock.

Once the grittiness disappears, it will be an out standing trigger. I suspect the weight will lighten a bit as it breaks in as well.

Now if I can just find some Trijicon HD's i'll be set.

TXPO
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