My first m&p failure to feed - MP-Pistol Forum

My first m&p failure to feed

This is a discussion on My first m&p failure to feed within the MP Gunsmithing forums, part of the Smith & Wesson MP Forum category; Hi all got a couple of questions to the M&P gurus I have a M&P 40 and i just had my firist FTF . Not ...


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Old December 29th, 2009, 10:20 AM   #1
 
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Hi all got a couple of questions to the M&P gurus



I have a M&P 40 and i just had my firist FTF . Not sure what the problem is i changed the recoil spring, mag springs i give my guns a good cleaning after every range trip could the problem be the extractor it ejects the brass no problem but when it picks up the bullet it does not fully catch and i got to pull the slide back a little. I am useing 180 gr fmj



I shoot the gun alot and it just started to happen



Thanks in advance



Chris
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Old January 24th, 2010, 01:43 PM   #2
 
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Quote:
Originally Posted by chris1974' post='235173' date='Dec 29 2009, 12:20 PM
Hi all got a couple of questions to the M&P gurus



I have a M&P 40 and i just had my firist FTF . Not sure what the problem is i changed the recoil spring, mag springs i give my guns a good cleaning after every range trip could the problem be the extractor it ejects the brass no problem but when it picks up the bullet it does not fully catch and i got to pull the slide back a little. I am useing 180 gr fmj



I shoot the gun alot and it just started to happen



Thanks in advance



Chris
Make sure you DO NOT use Fiiochi or Aguila ammo. M&P's are finicky. Some Hollow points can cause FTF to. If it is not the ammo, have someone watch you and make sure that your thumb is not hitting the slide lock. I watched a guy have numerous FTF's at an IDPA shoot and saw that his thumb was hitting the slide stop. Once he kept his thumbs down not one FTF.

Hope this helps.
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Old January 24th, 2010, 03:19 PM   #3
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Just one?



You shoot pistols long enough, in enough different weather conditions, in enough different states of physical condition and using enough different ammunition ... and I can't see why it would be surprising to encounter a feeding stoppage or even a failure to extract.



The usual consensus among most firearm instructors, armorers and armorer instructors I've met pretty much attributes the greatest unpredictable influence on pistol functioning to the shooter element, followed to a much lesser extent to ammunition-related issues. In good quality, well maintained pistols the occurrence of an actual gun problem seems to be much less likely than coming across shooter or ammunition-related functioning issues.



Neither of my M&P's have exhibited any indication of being fussy about the ammunition I've used in them, which has included several different JHP loads representing at least 2 of the major American manufacturers. Some has been of the low-cost/budget variety and some of the premium/duty-type variety. Most of the general training & practice I've done has involved grabbing handfuls of mixed ammunition of the appropriate caliber from a couple of containers of ammunition I rotate out of service or left over from different boxes used at one time or another. Recently, the only time I've used magazine loads of the same ammunition has been when I'm shooting up whatever's in my carry mags or when I'm opening fresh boxes to perform some courses of fire and I haven't brought my range ammo containers along with me.



BTW, you mentioned you've change the recoil & mag springs in your gun. Do you mind my asking how many rounds you've fired through your M&P 40?



If you've fired 5,000 rounds through it already (the S&W recommendation for spring replacement for LE guns) have you carefully checked the extractor to see if there's an accumulation of hardened carbon/fouling under the exposed space behind the extractor hook? I've seen some folks neglect to brush under the exposed edge of the extractor hook and allow some nasty stuff to accumulate which could eventually interfere with rounds being able to easily slide up under the extractor. I recently saw it occur in someone's relatively new 4513TSW (only 2-3 years old). I often use the short & stiff nylon bristles at the narrow end of a "M16" type plastic brush to clean that area out, followed by wiping it out with a patch wrapped over the bristles (without too much solvent/CLP, to prevent it from running back under the extractor and becoming trapped), and making sure it remains dry and clean.



Also, if the mags aren't clean and dry, or you were 'thumbing' the slide (slowing the slide velocity a bit) it could potentially cause feeding issues.



Some of the more common probable causes of failures-to-feed are improperly seated mags; sticky mag followers; bent/damaged mag lips; underpowered ammo; weak mag springs or a tight extractor. If it's a failure- to-close/lock into battery it could also be a dirty slide & barrel, dirty chamber mouth or weak recoil spring.



You can always call S&W and discuss any concerns with someone at customer service (or tech/repair, but bear in mind that if they're talking to you they aren't working on guns), especially if it isn't an isolated event but something you & they feel may require a trip back to the factory (at their expense all around).



Just my thoughts. I couldn't pretend to know what's happening with your gun unless I were there to watch you shoot it and check it myself. (Maybe not even then. )
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Old January 27th, 2010, 07:43 PM   #4
 
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Originally Posted by fastbolt' post='238749' date='Jan 24 2010, 05:19 PM
Just one?





Neither of my M&P's have exhibited any indication of being fussy about the ammunition I've used in them, which has included several different JHP loads representing at least 2 of the major American manufacturers. Some has been of the low-cost/budget variety and some of the premium/duty-type variety. Most of the general training & practice I've done has involved grabbing handfuls of mixed ammunition of the appropriate caliber from a couple of containers of ammunition I rotate out of service or left over from different boxes used at one time or another. Recently, the only time I've used magazine loads of the same ammunition has been when I'm shooting up whatever's in my carry mags or when I'm opening fresh boxes to perform some courses of fire and I haven't brought my range ammo containers along with me.


If you want failure to feed, shoot Fiiochi or Aguila FMJ ammo. I purchased 1000 rounds of Fiiochi because it was really cheap for the Police academy range and non stop FTF. Fortunately I had a friend that had 500 rounds of Blazer and no FTF.



I called S&W and they told me to shoot only ammo manufactured in the USA. They know about the FTF with import ammo.



Winchester white box, Blazer and PMC feeds flawlessly. My duty ammo (DoubleTap 135 gr. Nosler HP) feeds flawlessly.
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Old September 8th, 2014, 07:22 AM   #5
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Same problem...

I've eliminated every possibility based on user comments across the web.

This is not an ammo problem, not a feed ramp problem, not a "sling-shot" problem, not a spring problem (mag or recoil), and most certainly not a mag problem.

I'm experiencing this same FTF consistently on both my M&P Pro and Full, using multiple mags (some with extensions, some without). It happens in my Pro with both a Storm Lake barrel with polished feed ramp AND the stock barrel, as well as on my Full with its stock barrel. I even sent my Storm Lake barrel back to have the chamber opened to no avail.

I also refuse to even entertain the possibility of this being ammo related, when I only shoot factory ammo from PMC, Remington, Hornady, and Barnes. All of which, will FTF. Besides, if my Glocks will run on those, there's NO excuse for an M&P not to. The end.

I would say that from a clean state, I'm able to run approximately 20-25 rounds of ammo through each before the first hang-up. After that, here's what the FTF looks like:


photo from: M&P 45c Failure To Feed

As you can see, the feed ramp does its job, but the rim of the case is hung up on the extractor (at a bad angle). A tap on the back of the slide and I'm back in business.

In my opinion, and since I've eliminated every other possible option known to me, this is caused by two possible issues: 1) my thumb is riding the slide therefore adding resistance to its ability to cycle, or 2) the extractor is too tight.

Since the FTF happens consistently on two different M&P's, but not my Shield (or any other handguns I own for that matter), I believe that rules out riding the slide. So, my question is, how does one loosen the extractor... or should I just forget about S&W's extractor and drop in APEX never-fail extractors?
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Old June 12th, 2016, 09:14 PM   #6
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FTF w/ .40 Shield

Hello, I just finished testing an out of the box .40 Shield. I had the same feeding failure as the photo you posted. I had the FTF almost everytime I loaded my first round. Im using Perfecta ammo and Ive never experienced issues with this ammo from a .40 Glock. Furthermore, I had the .40 M&P compact and it never had FTF issues either with Perfecta ammo. So, did you ever find out what the issue was? I have a few really good ideas about what is causing this, however, your photo is the exact way my FTF looks. I appreciate any and all feedback.

Best,
Robert
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Old June 12th, 2016, 10:14 PM   #7
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This may be an ammo issue, over time I've seen a number of complaints about the Perfecta ammo manufactured by Fiocchi.
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Old June 13th, 2016, 02:48 PM   #8
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Another possible problem is weak wristing , or not holding the pistol firmly enough. My wife had this problem until I convinced her to have a firmer grip.
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