High failure rate.. *Updated with Pics*

[omalley72]

with my current 9mm loads. Here is the load info;

Xtreme 126grn rn
IMR 7625 4.5gr
Winchester SPP
OAL 1.150

I tried to fire 20 rounds through my G19 a couple of days ago. Out of the 20, 4 fired successfully. One resulted in a squib. The other would not fire, and acted as is they were snap caps. The primer strike was normal. I took the misfires home and deconstructed them to verify powder amount. Powder count was right at 4.5gr per round. I decided to make a new round, verifying everything was 100%. I then took that round and weighed it as a point of reference. I then began to weigh the loads and set aside those that did not weigh at or above the known good round.
I took those to the range today and while I had more success, I still have failure to fires as mentioned above. This is very concerning to me.
Any ideas?

The first photo is an unfired round showing the primer and it's seating depth.


The second photo is a misfired round, showing the primer strike.

[nubrun]

Are your primers fully seated?

[XDRoX]

You either got a bad batch of primers (unlikely), or are not seating the primers all the way.

A primer is activated when properly seated all the way down.

One thing you can try is re-firing the rounds that don't fire and see if they fire on the second or third try. If this is the case, which it most likely is, then your problem is not fulling seating the primers.

[ironhorse1]

Trying to sort by cartridge weight will not tell you a whole lot.

There are to many variables in case weight and bullet weight to allow one to tell if the powder charge is incorrect.

With SR 7625 I consider your charge weight vs the OAL to be on the light side.

My Beretta would not eject with that particular load.

I use 4.9-5 grains with an OAL of 1.120" with both 115 and 125 jacketed bullets.

It really seems to me that you have not fully seated your primers. If you can feel them sticking above the case head then you need to seat them further.

Also do you clean the primer pockets? Many do not and have no problems.

I have found the amount of carbon I have removed from the pocket
tells me that this is a necessary step to fully seat the primer.

So quit worrying about what they weigh. Just make sure the pockets are clean, the primers are fully seated and the OAL and powder charge combination is adequate to function the gun.

irh

[longrange99]

And verify there is NO oil that possible contaminated the primers. A little oil on a primer slide, or primer seater etc can deactivate your primers. (Don't ask how I know)

[Eljay]

I agree that higher primers are the most likely source. You should grab some factory ammo to see what they should look like - not just flat but inset by some tiny amount.

[shooterbill]

Pistol cartridges headspace on the case mouth. How is your crimp? You want just enough to remove the bell. Some pics would help.

[omalley72]

Interesting feedback... I looked at the primers on the rounds that did not fire, and they were slightly below flush. I even had the RSO take a look at them to get his opinion. I contacted Winchester and they have asked that I send in a few rounds as well as the unfired rounds that I experienced. They will take a look at it and determine the cause.
In terms of powder load data, Hodgdon doesn't list any data for 124gr rn, only HBRN. That called for 4.3grns, so I just bumped it up to 4.5grns for RN.

[prc77]

high primers,, the squib is more concerning

[stilly]

Post pics please. Seated primers I kinda doubt it. I think even if they were not sat all the way it would still go bang. I am thinking too light a load. what did the rimers look like AFTER they were shot?

PICS please.

[punkur67]

Do you tumble before or after you deprime? I had a bunch of brass that had no primers but was filthy. When I tumbled it the primer pockets got packed with my tumbling media. I had to clean out each pocket prior to loading.

[J-cat]

If you hand seated the primers to the bottom of the primer pocket and the striker made a normal dent and they still didn't fire, then the evil Glock KB demon does not want you to succeed.

If you used your press to seat the primers, then you failed to seat them consistently. Looking at the ones that did not fire and noting they are below flush does not tell us anything because the striker pushed them below flush when it hit. You don't know how they were seated before impact.

Get a Hornady hand priming tool. I've had about five misfires in over 20 years and 100,000+ rounds loaded.

[Leethe4th]

OP, I would check the striker bore spot face on your G19 and make sure that it is clean. Also if you could post pics of the cases that fired versus the ones that had 'light' strikes.

[Cult Hero]

I had the same thing happen with IMR SR7625 to me with some 45 the other day. 4.5 wouldn't even cycle the slide. 5.3 was barely adequate. I bumped up to 5.8 and they are great. I believe the data on this powder to be questionable. Please load at your own risk but I had to work up a load way outside what my Lyman book said to get any sort of velocities close to what I should.

Have you reloaded with the se primers and a different powder? Any issues there?

[tylenol9999]

I think you have some thing terribly wrong. I ladder loaded for my gen 4 glock 19 starting at 3.6 to 4.6 grains, using 124 grain extreme rn at 1.125 COL. All of them fired, had ejection problems from 3.6 to 4.2. 4.3 was super smooth and accurate. I was using CCI spp and mixed once fired range brass.