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Failure to Feed mystery

This is a discussion on Failure to Feed mystery within the MP Compact Pistols forums, part of the Smith & Wesson MP Forum category; I just got this email. Interesting and nice they will honor the warranty after refinishing. Let's see what their replacement is like when I get ...


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Old August 31st, 2016, 04:13 PM   #31
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Update from Promag

I just got this email. Interesting and nice they will honor the warranty after refinishing. Let's see what their replacement is like when I get it!

"We will replace it no problem with the finish changes etc.

Your return number is : XXX
Our returns address is listed below. After the magazine is returned the replacement ship asap.
Sorry for the issue sir, however we will get you out another magazine.
Thank You.
Tech Support
Jack"
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Old August 31st, 2016, 07:48 PM   #32
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Good luck! It's good news anyway.

FWIW, they should make good stuff to begin with and not need to replace it. To me that just makes more sense, better customer relations, and reputation.
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Old September 1st, 2016, 07:39 PM   #33
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GForse, BTW, My NP3+ coated gun will be arriving tomorrow! Yippee! Robar had it since the beginning of June.

It cost me 5x what I paid for the gun in '74/'75, with all that was done to it, but to me the gun was worth the expense. I loved the P-35 as it was. Eagerly anticipating the "new" P-35.

I'd love to shoot one in USPSA competition; or another like it. But they treat it as a Limited gun and to my mind it's clearly Production with millions made by many countries. But USPSA is clearly stacking the deck against SA guns in favor of other designs rather than letting the chips fall where they may and letting the competition decide what works best and let that drive the modern designs.

Anyway, mine will be back in my hot little hands tomorrow! And it'll be worthy of being passed down to other generations. Of course I expect it to be used by me for some more years yet.
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Old September 2nd, 2016, 03:21 AM   #34
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Robar

Quote:
Originally Posted by BrianK View Post
GForse, BTW, My NP3+ coated gun will be arriving tomorrow! Yippee! Robar had it since the beginning of June.

It cost me 5x what I paid for the gun in '74/'75, with all that was done to it, but to me the gun was worth the expense. I loved the P-35 as it was. Eagerly anticipating the "new" P-35.

I'd love to shoot one in USPSA competition; or another like it. But they treat it as a Limited gun and to my mind it's clearly Production with millions made by many countries. But USPSA is clearly stacking the deck against SA guns in favor of other designs rather than letting the chips fall where they may and letting the competition decide what works best and let that drive the modern designs.

Anyway, mine will be back in my hot little hands tomorrow! And it'll be worthy of being passed down to other generations. Of course I expect it to be used by me for some more years yet.
Great! Post a pic when it gets back! Love to see it!

My M&P has been running smooth with new factory mag. I am going to challenge it with another test. I just got a Storm Lake 9mm conversion barrel and a (S&W factory) 9mm mag. Will be to the range later this week to see how it cycles 9mm!
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Old September 2nd, 2016, 05:35 AM   #35
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Find it here: Getting a gun back from Robar
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Old September 3rd, 2016, 03:57 AM   #36
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I had a similar problem with some polymer coated bullets I reloaded. Check the OAL of your ammo and do a plunk test with the barrel. My problem was solved.
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Old September 3rd, 2016, 05:15 AM   #37
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Good point Scott.

I learned that the hard way during a match. I never chamber gauged my ammo with my M&P. Then I had one that got stuck, really stuck, half way into the chamber. I couldn't fix it and that stage was toast. Now all of my comp' ammo gets gauged. It takes no more time to do if one puts their ammo into ammo boxes anyway. The ammo goes into the 100 round gauge, then gets transferred into the ammo box. It takes longer to type it than it does to do. Now 100% of my ammo is gauged. Since the gauge "chambers" each mimic a very tight chamber, if it goes into the gauge it'll work in my barrel.
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Old September 3rd, 2016, 12:46 PM   #38
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Plunk

Just got he calipers and did some investigating. See the pics for results. The Hornady Critical Defense Ammo seems to feed with no FTF issues. The reloads are a smidgen longer.... so seems you guys are catching the fine stuff!

THANKS!
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Old September 3rd, 2016, 01:02 PM   #39
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Yeah, that'll do it. And if the inertia of the slide does get the bullet to seat deeper or lodge in the barrel, if you extract it you might find a mess of powder in the innards of the gun and a bullet lodged in the rifling. BTDT. That would be the best outcome.

I never exclusively go by COAL because the bullet ogive and the start of the rifling can have a way of changing things. But seat a bullet wildly deeper than the manufacturer gives in the load data and it can lead to huge pressure excursions. I try to steer clear of double base powders with high nitro content with loads like that. A few decades ago there was a problem with Bullseye and guns that blew up. It was traced to the bullets being set deeper from recoil and pressures that even rifles would find intolerable (100k+ psi). I think I read of the testing and results in The Am' Rifleman.
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Old September 3rd, 2016, 04:39 PM   #40
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Quote:
Originally Posted by BrianK View Post
Good point Scott.

I learned that the hard way during a match. I never chamber gauged my ammo with my M&P. Then I had one that got stuck, really stuck, half way into the chamber. I couldn't fix it and that stage was toast. Now all of my comp' ammo gets gauged. It takes no more time to do if one puts their ammo into ammo boxes anyway. The ammo goes into the 100 round gauge, then gets transferred into the ammo box. It takes longer to type it than it does to do. Now 100% of my ammo is gauged. Since the gauge "chambers" each mimic a very tight chamber, if it goes into the gauge it'll work in my barrel.
Embarrassing! Reloaded a lot for revolver never had to worry
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Old September 16th, 2016, 02:26 PM   #41
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UPDATE - Solved

SO I got the S&W factory mag as mentioned before. I finally received the ProMag 'warranty replacement' 15 rd mag. Went to the range today. I first shot 15 rounds from the factory mag with not a hitch. Inserted the Promag and on the third shot - jam, two more, jam. Two more, jam. With the brand new ProMag... So, I view that as solid confirmation ProMag makes junk

I measured the tolerances of the mag and they seemed better, but the one thing I notice is the Promag spring seems much weaker.

As an experiment I may switch the springs one day just out of curiosity.

Also, I got a Storm lake 9mm conversion barrel, and a S&W 9mm magazine. Ran 200 rounds of 9mm through it today without one hitch.

After shooting all the .40 and .357, shooting the 9mm out of the same gun felt like no recoil whatsoever!

Thanks for all the help!
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