G19 light primer strikes

[Mustard]

Hi all. I replaced the recoil spring on my g19 with a factory new as part of my annual maintenance, and started noticing light primer strikes with my reloads (never had this problem before with my reloads). I cleaned the firing pin channel, but still had the light strikes. I replaced the striker spring with a factory new spring but it didn't fix the problem. I'll keep replacing things until it fixes the problem, but figured i'd ask the brain trust if they know what's going on. Any ideas?

The gun turned 2 last December, maybe 10k rounds through it (with new recoil springs every 5k). Haven't replaced any other internals.

[Citadelgrad87]

Have you changed primers?

I bought some surplus Greek 9 and the word was glocks dont like it, primers are hard.

[baranski]

Any chance the striker tip is worn down or damaged?

[Mustard]

Have you changed primers?

Negative. Been using CCI small pistol primers since day one

Any chance the striker tip is worn down or damaged?

That, or deformed spring cups, was my next guess. How would I tell that the striker tip is worn down?

[hambam105]

Light strikes...Glocks....aftermarket springs....Well surprise surpise!

[5.56Geo]

Light strikes...Glocks....aftermarket springs....Well surprise surpise!

[5.56Geo]

1. Have you tried primers from different batch to rule out a batch of bad primers?

2. Could there possibly be debris internally on the actual breach face where the striker motion is being hindered?

3. Have you changed the method you are installing primers, different primer tool? Where they are being seated deeper in the primer pocket.

4. Damaged firing pin on striker, already mentioned.

Good luck!

[Turbinator]

Light strikes...Glocks....aftermarket springs....Well surprise surpise!

He's using factory OEM springs....

OP, look closely at the striker tip, see if anything got chipped or broken off. You probably can find images of brand new strikers on the 'net, compare the two and see if you spot any damage to yours.

Turby

[AFTII]

Light strikes...Glocks....aftermarket springs....Well surprise surpise!

If you know how replacing a RECOIL spring is responsible for light strikes, please enlighten us all. I'm sure the OP is all ears.

OP, have you changed anything in your loading process? Do you uniform your primer pockets? If so, are they cut too deep? Do you still have the recoil spring you removed? If so, does replacing the new spring with the old one fix the issue?

Are you using the same batch of CCI primers or are these new? Perhaps the cups are out of spec?

Have you trimmed the cases? Perhaps they are too short. Does factory ammo also show light strikes?

[Ktm45]

I think you should check if the primers are being seated deep enough. The primers must be below flush with the case. If you have a Dillon clean and re-adjust the primer cup.

[rsrocket1]

Plunk test your ammo. If the light primer strikes are off center, the slide is not going 100% into battery and the barrel is tilted just slightly. That could be just enough to allow the trigger to release the striker but not not closed enough to get a flush fit against the breech for a good striker hit.

Try some factory loads.
Check the striker channel for any possibility of the striker hanging up.
Are you using 0.355" jacketed or 0.356" plated or wider lead bullets?
Is your chamber clean and free of any sooty built up?
Is your extractor clean or is there any gunk in the hook?

Something may have happened between your old setup and after your "maintenance".

BTW, no need to do any "maintenance" at only 10k rounds. I thought so too with my M&P 40 and only did "preventative maintenance" once at around 10k (recoil spring and mag springs). Since then, I haven't done any after over 70k and the gun is as reliable or more reliable now than it was when new. I've bought a new barrel but it shoots just as accurately with the original barrel as it does with a new one.

[Mustard]

Pistol is pretty clean. I clean it roughly every few thousand rounds, or before a class. Gun FUDDs and no **** operators alike swear by glock reliability and not cleaning for thousands of rounds, so i find it hard to believe that the gun being dirty has caused the issue

Nothing changed in loading process. 95% of the primers are flush with the case head, the rest protrude a few thousandths; imperceptible unless you're looking under a magnifying glass. Not ideal but that's really picky, and in the grand scheme of reliable pistols that shouldn't matter. Also i've shot lots of these reloads before with no problems. But F it, i'll dail it in a little more.

Haven't tried new batch of primers; though i don't track primer/ powders by lot, it's been a while since i've been in this 5k case of primers and ther light strikes are a new thing.

I use brass scrounged up from the range. Lots of it is once fired. No trimming or brass prepping besides tumble, lube, size (undersize lee sizing die), decap, tumble, load.

Plunk test and chamber check gadget passes. Primer strikes are not off center

I don't have this problem with factory loads

The firing pin has a little deformation where the firing pin block interfaces. See pictures http://imgur.com/a/ItwPLZv Anyone ever heard of a trigger bar wearing down where it pushes the firing pin block out of the way? That might make the pin drag against the block

The gun is all OEM except the sights. The magazine release and slide stop are glock, but extended.

[baranski]

Try the same ammo in another pistol.

[nimbus]

I think you should check if the primers are being seated deep enough. The primers must be below flush with the case. If you have a Dillon clean and re-adjust the primer cup.

This. Happened to me with my reloads when I first started. The primers weren't seated deep enough. The striker pushes the primer inward instead of igniting it. CCI primers, too.

[Fatcat]

Pistol is pretty clean. I clean it roughly every few thousand rounds, or before a class. Gun FUDDs and no **** operators alike swear by glock reliability and not cleaning for thousands of rounds, so i find it hard to believe that the gun being dirty has caused the issue

Nothing changed in loading process. 95% of the primers are flush with the case head, the rest protrude a few thousandths; imperceptible unless you're looking under a magnifying glass. Not ideal but that's really picky, and in the grand scheme of reliable pistols that shouldn't matter. Also i've shot lots of these reloads before with no problems. But F it, i'll dail it in a little more.

Haven't tried new batch of primers; though i don't track primer/ powders by lot, it's been a while since i've been in this 5k case of primers and ther light strikes are a new thing.

I use brass scrounged up from the range. Lots of it is once fired. No trimming or brass prepping besides tumble, lube, size (undersize lee sizing die), decap, tumble, load.

Plunk test and chamber check gadget passes. Primer strikes are not off center

I don't have this problem with factory loads

The firing pin has a little deformation where the firing pin block interfaces. See pictures http://imgur.com/a/ItwPLZv Anyone ever heard of a trigger bar wearing down where it pushes the firing pin block out of the way? That might make the pin drag against the block

The gun is all OEM except the sights. The magazine release and slide stop are glock, but extended.

I noticed in the 2nd picture there are some burrs on the area where the firing pin safety is engaged. Could be dragging on on the firing pin safety. Check the functioning of the trigger bar to ensure it fully engages the firing pin safety.