CCI Primers and Failure to Fire - MP-Pistol Forum

CCI Primers and Failure to Fire

This is a discussion on CCI Primers and Failure to Fire within the MP Reloading forums, part of the Smith & Wesson MP Forum category; I have an M&P Pro in 9mm with the APEX Comp AEK installed. I've loaded and shot several hundred rounds of 147 Gr Berrys and ...


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Old March 29th, 2014, 07:32 AM   #1
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CCI Primers and Failure to Fire

I have an M&P Pro in 9mm with the APEX Comp AEK installed. I've loaded and shot several hundred rounds of 147 Gr Berrys and Xtreme RN over 3.2 Gr of Titegroup and Tula primers. No problems. i switched to CCI and instantly got 3 light primer strikes/failure to fire in one hundred rounds. I initially bought the Tula primers to make cheaper practice rounds and save the supposedly higher quality CCI for competition (IDPA). Now I think I'll buy more Tula and sell off my stock of CCIs. Prior to the M&P Pro, I shot over 1000 rounds with the above recipe with Tula primers in a M&P FS without a single failure to fire.
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Old March 29th, 2014, 07:51 AM   #2
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I always use cci or Winchester primers in my m&p's and never had any lite strikes maybe the striker spring needs replaced just a thought
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Old March 29th, 2014, 09:53 AM   #3
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I have not had any problems with my CCI primers but I started using a batch of Tula's I bought 3 or 4 years ago and have had 2-3 fail to fires out of each 100. Some times they will fire the second time but mostly even after 3 or 4 strikes they do not fire. Just figured I have a bad batch of Tula's, they were cheap to buy, so no big deal. I will use my Win. or CCI's for shooting matches and figure the Tula's give me a malfunction clearing drill once in a while.
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Old March 29th, 2014, 11:03 AM   #4
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You might have heard of various brands of primers of being "hard" or "soft", the correct term is sensitivity, or, how hard does the firing pin have to hit to fire that brand of primer reliably.

CCI primers are probably the least sensitive primers on the market, it takes a harder hit to set them off, CCI's are considered hard, and the most likely to cause a problem with misfires if they aren't hit hard enough. CCI primers generally don't work well in striker fired pistols like the M&P, they are the brand most likely to misfire, not because of a defect, but because they aren't hit hard enough. Striker fired pistols as a group don't hit the primers with a lot of force, this is related to their design, heavier springs would help, but at the sacrifice of trigger pull quality.

Winchester primers are a medium sensitivity, they usually work well in almost any pistol and should work reliably in striker fired pistols like the M&P.

Federal primers are fairly sensitive, they are considered "soft", they are the most reliable in almost any pistol. Many match pistols are set up to use only Federal primers, they will work with lighter springs so this makes it easier to get a good trigger pull. Federal primers are considered by many to be the most common brand used by match shooters. There is no free lunch however, they aren't a good choice for hot loads, but for most loads they are a great choice.

Remington primers aren't as commonly used in reloading, I believe they are similar to Winchesters in sensitivity.
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Old March 29th, 2014, 12:27 PM   #5
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Thanks for the replies. I'll try Federals as I figure my load is not considered to be too hot. Funny though that I've never had problems using CCIs with my M&P FS with Duty Carry AEK.
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Old March 29th, 2014, 12:36 PM   #6
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Dollars to doughnuts says it's the lighter comp striker spring.
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Old March 29th, 2014, 01:07 PM   #7
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I have not encountered a problem with CCI primers as others have. They (CCI) have been satisfactorily employed in S&W MP series pistols and Glock Gen-3 series pistols. Usually I use Winchester but on occasion employ CCI and have not noticed discrepancies in application.

Just asking could it be a difference in the seating procedures employed for either brand of primer?
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Old March 29th, 2014, 01:58 PM   #8
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Mr Macho, I owe you a doughnut. You reminded me I had to change striker springs when installing the Apex mods. So will going back to the factory spring cause problems or change the trigger feel?
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Old March 29th, 2014, 02:50 PM   #9
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Mine (9MM FS and .357/.40 FS) have worked fine with CCI and Federal primers but the 9MM has had numerous failures to fire with Tula primers.

The M&P and the Glock have similar "strikes" (per the pencil test) while the XDM appears to hit the primer with a whole lot more force. I've never had issues with the XDMs and Tula primers, just the M&P.

Guns are different, what works well in one, just isn't so great in another handgun. Find what works and try to stick with it.
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Old March 29th, 2014, 03:38 PM   #10
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Like I said I've not had a problem with CCI primers in striker fired pistols.
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Old March 29th, 2014, 05:04 PM   #11
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CCI primers are known to be some of the hardest primers. Federal are then softest. When I used to shoot revolvers with trigger work done I could only use Federal primers with them. Problem is now Federal primers are impossible to find.
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Old March 29th, 2014, 05:13 PM   #12
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Quote:
Originally Posted by Wongtheo View Post
Mr Macho, I owe you a doughnut. You reminded me I had to change striker springs when installing the Apex mods. So will going back to the factory spring cause problems or change the trigger feel?
image.jpg

I don't think going back to the factory spring will give you any problems, but I'd imagine the trigger pull weight will increase a tad. I tried to find some numbers on the interwebz and didn't find anything... Stupid interwebz!
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Old March 29th, 2014, 08:30 PM   #13
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There have been a few reports of M&P's not hitting hard enough to set off the primers, this is with stock guns, no work done on them at all, I think in every case CCI primers have been involved. It isn't common, but it does happen.

I have never cared too much for CCI pistol primers since they are often harder to seat than Winchesters or Federals, but everybody has their own personal likes and dislikes.

Using CCI primers in striker fired pistols doesn't mean you will have problems, but you are more likely to have problems with CCI's than other brands of primers.
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Old March 29th, 2014, 11:30 PM   #14
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I had nothing but problems with the Tula primers.
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Old March 30th, 2014, 05:02 AM   #15
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I have only used CCI and Fiocci primers. I've never had problems with the CCI. I have had problems fully seating the Fiocci in some brands of cases using my Dillon 650. The only misfires I've experienced were for primers that weren't fully seated, and escaped my visual inspection.
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