Glcok FTF quite a few

[ronas]

I was shooting with a couple of friends yesterday. We all were shooting our own 9mm reloads.

One of the guys shooting a Glock had quite a few FTFs, like 20 out of 100 rounds. He would just rack the slide round would eject and next round usually went bang. Sometimes two FTF in a row.

The other guy firing the Glock put one of the rounds in his Glock and it fired. Then he tried another and it FTF too.

What might be going on? I was thinking weak firing pin spring. Although the FTFs did have firing pin strike marks on them.

[Chief-7700]

I would guess that the primers were not seated. First strike seats the primer second strike makes is go bang, or Wolf primers.

[uscbigdawg]

I would check oal and crimp.

Rich

[coyotebait]

My guess is crappy primers or not seated....as stated before.

[Tripper]

That was a misleading title,
Should have been FTF reloads, not glocks

[SixPointEight]

Did the strikes look that same as the other primers that did fire? did you check some assembled rounds to see if they had high primers? One of the quickest, though not very accurate way, is to set the round primer side down, and see if it's stable on a flat surface.

[Bill Steele]

I was having occasional fail to ignites while I was experimenting with using an ultra sonic cleaner on my brass. I thought I was drying the brass, but obviously some got through with enough moisture to cause the failures.

I gave up on ultra sonic and went back to my puny tumbler and everything works great again.

I have lightened main springs on many semi's and tried these with hard primers and never had a light strike cause a fail to fire, so I would look to your loads versus looking at the gun, at least at first.

Good luck.

[Brd_Hntr]

Best guess is the primers were not fully seated. In my early days as a reloader I had this problem. At the time I was using the priming tool on my press, so I got a better priming tool which gives more 'feel.' I visually inspect and run my finger over the seated primer to be sure it is slightly below the head of the case as the last step in case priming.

Take a look at:

http://www.reviewsofthings.com/guns/9mm_luger_primer_failure_misfire_dud.html

[ronas]

Did the strikes look that same as the other primers that did fire?

Yes

did you check some assembled rounds to see if they had high primers?

No

We were thinking it was the reloads or the gun. Kind of sounds like some kind of primer problem.

[SixPointEight]

Um...a problem with the reloads would include a high primer. A high primer will often be seated by the firing pin, instead of igniting. It will have a mark like it was hit, but won't go off.

By telling me the strike looked the same as the others you've eliminated some variables. The round wasn't too long. It's not the case mouth bell keeping the cartridge from dropping into the chamber. It's not a feeding problem. It's not a weak firing pin spring, or broken firing pin.

At this point I'm calling it a high primer, contaminated/bad primer, or contaminated powder. Not enough info to fully judge, but you could pull apart the bad rounds and look for powder clumping.