Need advice about misfires


January 1, 2012, 11:42 PM
I use a Hornady LNL press and have been using CCI primers for over a year. I have not had one misfire with my 9mm S&W M&P using CCI primers. I recently purchased about 1500 CCI primers that were on sale. Since Iíve started using the newly purchased primers, Iíve had numerous misfires. At first I thought it was my gun. I ultimately purchased a new M&P Pro, and I encountered misfires using it. One friend who was with me loaded one misfire into his Glock 34, but he encountered the same issue. Another friend then loaded it into his Glock 19 and it discharged. I am going to buy some Federal primers tomorrow and see if I have the same problem. Has anyone encountered a similar issue? I would appreciate any suggested remedies!

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Striker Fired
January 2, 2012, 12:03 AM
I would say that there may have been a reason those primers were on sale. Check for a recall lot# or if the containers they were in show signs of water damge maybe?Something with that batch is wrong because CCI is one of the last mfg's that has issues with bad primers,but it does happen in certain lots.

January 2, 2012, 12:15 AM
Wow, I've been using CCI's for every metalic application for 3+ decades and have not yet had one mis-fire. Here's a couple of suggestions that are commonly responsible for mis-fires.

Make sure they are seated a minimum of .002" and a maximum of .004" below the head. Too deep can also cause problems, so maintain the above depth. Avoid contaminating them as well, don't handle them with anything but clean dry hands. Make sure your brass is also free of any thing that can contaminate them, lube is the most common problem. If you are a reloader who washes or rinses your brass make absolutely sure they are dry.

Since you've run the rounds through multiple firearms, it is probably safe to say it's not the firearm.

January 2, 2012, 03:05 AM
It's most likely a primer seating issue. Actually measure the depth of the primers below flush and see where they are. Most dial calipers can be used for this by using the tail of the slide.

They should ideally be .004" below flush. If not, then they're being seated by the firing pin.

Hope this helps.


January 2, 2012, 04:37 PM
I'm with Fred on the this one. Sounds like the primer is not being fully seated in the pocket. If this is the case they will normally go off the second time.

Hondo 60
January 2, 2012, 08:57 PM
Just on the odd chance that it is the primers, may I ask what the Lot Number is?
I just bought some CCI 500s that were on sale from Cabela's,
but it'll be months before I get to them, as I still have 3k Tula SPPs

January 2, 2012, 10:47 PM
Are the primer pockets crimped?

January 2, 2012, 11:11 PM
I also have to agree with Fred on this one

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