Problems with Winchester Ammo in my Glock

[Enachos]

Took my fiancé and the new Glock 27 out for a day of shooting today and to my surprise had 3 malfunctions. Shot 50 rounds of 180 gr. American Eagle with no problems and 50 rounds of Winchester (white box) with a total of 3 malfunctions. I believe it to be a ammo problem... Here's why: The first malfunction occurred while my fiancé was shooting. She shot about 3 or 4 rounds, then "click". Figured it was a dud so she handed me the pistol for clearing. I removed the magazine and tried to rack the slide back but it was stuck. Very stuck... So stuck I had to get the range officer to take a look at it. So anyways, about 10 minutes later, the R.O. walks back up to me with the G27's slide locked open and the bullet in question in his other hand. He proceeded to show me that the firing pin did it's job but the primer failed to ignite the powder in the bullet. I had never seen anything like it. I just don't understand what caused the slide to lock closed the way it did... Any input on that???

So anyways, I get back to my fiancé, loaded her up a mag and told her to let it rip. About 4 or 5 rounds into that magazine, malfunction number 2 happens... She fires a round and then... A FTF. The bullet that was next in the firing order got hung up and the slide failed to completely go into battery. So I remove the magazine, eject that round, inspect it, and set it aside. Couldn't see anything visually. I re-insert the mag. Rack a round in the chamber and BOOM. I can only assume something was wrong with that bullet because I tried 3 time to get it to chamber it and it never could.

Malfunction #3 happened shortly after... I was going through a mag and then
"click"... Again. I clear the weapon. Inspect the primer on the bullet and the Glock did it's job in striking it. Seems maybe it was a bad primer. Again, I set that bullet to the side.

What's the deal here? Is it my Glock or the ammo? What would cause my slide to lock back the way it did? And why would that other round not chamber in my firearm???? Is Winchester's QC going down???

 

[SFsc616171]

Too many variables.
Limpwristing by GF.
Ammunition failure.
SMILE
(IT'S A GLOCK).

 

[Enachos]

I agree. Too many variables. I ruled out limpwristing because I myself tried manually racking that round into the chamber and the slide just wouldn't fully seat into battery. I even gave the slide a little tap on the rear... But nothing. Maybe the round was out of spec??? Just seems weird to me.
Something is up with the primers too. Malfunction #1 left me in shock because I have never seen a primer go off but not ignite the powder. After unlocking my slide, the R.O. pulled the slug out of the casing only to realize the primer had indeed gone off but it failed to ignite any of the powder in the casing. Clearly an ammo issue.

Malfunction #2 is just weird in that I could not get that specific round to chamber no matter what. Still have the round but I can't visually find anything wrong with it. I'm gonna call this an ammo issue too.

Malfunction #3 had to have been a primer issue. Atleast, I hope. It occurred at about round 73 out of the 100 I shot. After pulling the trigger and hearing the dreaded "click". I removed the bullet for inspection. First thing I noticed, like I said, was the firing pin indention left on primer. So I know the pistol did its job. I guess I was just worried that my pistol was making light strikes, thus giving me problems.

Gonna take the little pistol out for some more range time here soon. Gonna try and give WWB another shot to see how it performs... Don't wanna give up on that ammo just yet. Maybe it was just a bad box I bought.

 

[Queen_of_Thunder]

Three rules of many to avoid ammo problems.

Rule #1. Inspect your ammo before using it. Nothing is perfect including factory ammo. So to be on the safe side inspect every round.

Rule #2. Keep your magazines clean.

Rule #3. Number your mags.


Just because there is a primer strike does not mean the primer ignited. You may have encountered a batch of ammo with hard primers. There are several possible problems to consider from limpwrist, to hard primers, to magazine problems, to firing pin problems and who knows what else.

 

[orionengnr]

Several issues.
First, your use of FTF is unclear. Fail To Feed? Fail To Fire? Then you state that the actual problem was FTRB (Failure To Return to Battery). If you are not sure that your use of abbreviations is standard and perfectly clear, just spell out what happened.

Then...

Couldn't see anything visually. I re-insert the mag. Rack a round in the chamber and BOOM

Are you saying that this round went off when you chambered it???

At several points you say that it "stuck". In the first paragraph you say that it stuck closed. In the fourth paragraph you state that it stuck "back".

A FTRB should not "stick". A round that is slightly long (COAL) may, once it is fully chambered, be difficult to extract. A short chamber in said barrel is another possibility. And it can be a bit of a chore to get it clear.
And, depending, it "may" allow the firing pin to get a half-whack at it. Maybe not enough to light the primer off...but enough to put a dent in the primer.
If I had to guess, I'd bet this is what happened, at least with that one round.

 

[Drail]

My advice would be to have the weapon completely stripped and carefully inspected for any foreign object damage or pieces of primers. It doesn't take as much as you might think to lock up an action. Too bad about Winchester's quality control these days. They're not alone though.