Spent casing diagnostic needed

[tdoom15]

I picked up a 08 glock 19 with NS and 3 mags and less than 1k rounds fired for $400 cash, which I thought was a steal. I got a chance to shoot it briefly yesterday and everything seemed fine except I got 2-3 spent casings to the head in about 75 rounds before dinner.

I picked up some of the shells and noticed something kind of alarming on about 9/10 shells. I'm not sure what's causing it, the only thing I know is that it is happening on the right side of the gun and I can't replicate it without firing it. I can pull the slide back hard enough to eject a snap cap and will get a slight dent in the same spot that the damage to the casings are happening at.

My only guess is that it is hitting the trigger bar ear on the way out, perhaps caused by a weak RSA that is causing the case to come out faster than normal? Anyhow, on to the pics.

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03794.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03793.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03791.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03789.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03795.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03796.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03800.jpg

[Wildcat]

tdoom15:

These marks usually indicate the shell is running into the lower edge of the ejection port instead of being thrown clear through the port.




http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03791.jpg



If you inspect the inside face of the slide at the bottom of the ejection port, you might find brass smudges where the brass is impacting.

Also check the rims of the shells in the photos. Likely there are marks, inside the rim and aligned with the dent shown in your photo, where the brass has been wrenched out from under the extractor.

[Hart]

Thought casings might be hitting the safety detent on trigger bar (what looks like brass polishing) but testing the idea shows me that is not likely the case.

[chasetopher]

There are a a couple threads around here discussing this problem seen with the ejection port. The ejection port can cause issues with clean ejection of spent casings.
Firing a round without a mag, most glocks have trouble ejecting cleanly which shows how low the casing actually is when being pulled out by the ejector to the point where it needs support from the magazine to eject cleanly.

This is addressed by certain aftermarket slides or custom ramping of the ejection port, that have a much lower/more angled ejection port opening.

Pretty sure if Grant sees this he will be able to speak in more detail.

[tdoom15]

tdoom15:

These marks usually indicate the shell is running into the lower edge of the ejection port instead of being thrown clear through the port.



If you inspect the inside face of the slide at the bottom of the ejection port, you might find brass smudges where the brass is impacting.

Also check the rims of the shells in the photos. Likely there are marks, aligned with the mark, inside the rim where the brass has been wrenched out from under the extractor.

I do see where the rim of the case has definitely been wrenched out

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03808.jpg

The casing contacting the slide was my first thought, but it seems way too clean for having that much brass hit it, unless it is the exact same spot every time...which you can see in the pics below do show a very little bit of a marked spot that could be it?

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03805.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03804.jpg

[1oldgrunt]

Sorry but have held it in long enough......Since Glock has used the same basic height ejection port for over 2 decades with no problems....why is it in the last couple years the ejection ports all need modification, Gen 3 , gen 4 no matter ....so many are quick to say it's an ejection port problem!? WHY?!
I can see blame the new extractor, new ejector, new RSA assemblies, etc......

how about maybe it's the ammo ???? QC on most budget lines has gone to hell the last couple years ....justa thought.

Just don't see why all of a sudden ejection port height, angle, yadda-yadda

[Wildcat]

The casing contacting the slide was my first thought, but it seems way too clean for having that much brass hit it, unless it is the exact same spot every time...which you can see in the pics below do show a very little bit of a marked spot that could be it?


That looks like the spot. It would be roughly 17-19mm forward of the breech.

Do you have a different extractor you could try?

[tdoom15]

I was using speer 124 gr lawman, 75 rounds out of the 2008 dated glock 19 and 75 out of a PPQ. The PPQ had zero issues. I've seen scratched cases before, but never as bad as the ones I posted above. I may go put a couple hundred more rounds through it tonight to see if this is going to be an issue, unless someone can tell me otherwise? I forgot to mention there was one stove pipe, but it was my gf shooting it so I'm not ready to attribute it to the gun.

I understand that glocks have always had this issue to an extent, but is this bad enough that you guys would recommend doing something about it? This is something that will be used for occassional CC, and HD.

[Wildcat]

Sorry but have held it in long enough......Since Glock has used the same basic height ejection port for over 2 decades with no problems....why is it in the last couple years the ejection ports all need modification, Gen 3 , gen 4 no matter ....so many are quick to say it's an ejection port problem!? WHY?!
I can see blame the new extractor, new ejector, new RSA assemblies, etc......

how about maybe it's the ammo ???? QC on most budget lines has gone to hell the last couple years ....justa thought.

Just don't see why all of a sudden ejection port height, angle, yadda-yadda

OG, don't you feel better now that you let that out?:D

I doubt its the ejection port height. If anything it is probably the extractor hook geometry or the ejector striking too high on the case.

[tdoom15]

Here are some pics of the extractor and ejector. As far as I can tell everything looks ok, but perhaps someone with more experience can see something else.

Should I just replace both and see what happens? Are the parts readily available being from 08 and having a couple other variations out since the gen 4 debacle?

Appreciate the help, just really want to get this resolved as soon as I can.

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03817.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03816.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03812.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03811.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03810.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03815.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03814.jpg

http://i868.photobucket.com/albums/ab246/apexdbetta2/DSC03813.jpg

[SpankMonkey]

What type of ammo are you shooting? Where is the extractor mark in relation to the rub/smack mark? Are both marks on the same side of the case?

[mtdawg169]

I just got a new gen3 G19 fixed at glock last week. Shooting win NATO 124 gr ammo, I'm getting similar case damage. Ejection is much improved after replacing the extractor, but I'm positive the case damage is coming from slide contact. I have noticeable brass marks on the ejection port.

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[Norseman]

Just my .02 cents,

Completely break the thing down and do a full cleaning, as good as G-locks are, they can get sluggish if gunked up to much.

Try a different brand of ammo. All guns will be different in their ammo preferences, even the ones that are known to eat anything you feed them. Just because it will digest it, doesn't mean it will like it.

This would be the first steps I would take before swapping things out on the gun. Its the easiest first step, and the least expensive.

[tdoom15]

What type of ammo are you shooting? Where is the extractor mark in relation to the rub/smack mark? Are both marks on the same side of the case?

Speer lawman 124gr, like I said above, i shot an equal amount through a PPQ with no issues.

The extractor mark and the dent are on the same side, pretty much inline with eachother.

[tdoom15]

I just got a new gen3 G19 fixed at glock last week. Shooting win NATO 124 gr ammo, I'm getting similar case damage. Ejection is much improved after replacing the extractor, but I'm positive the case damage is coming from slide contact. I have noticeable brass marks on the ejection port.

Sent from my DROID RAZR using Tapatalk 2

Do you have before and after pics of the damage to the casings? Is the damage much less than before?

I am going to completely break it down tonight and then shoot it and see what happens. I did notice that it was dripping with lube (even in the extractor and striker channel) when I picked it up and I just wiped it down and shot it as I didnt have much time.

[mtdawg169]

Do you have before and after pics of the damage to the casings? Is the damage much less than before?

I am going to completely break it down tonight and then shoot it and see what happens. I did notice that it was dripping with lube (even in the extractor and striker channel) when I picked it up and I just wiped it down and shot it as I didnt have much time.

I didn't notice it before. It may have been going on, but I was too busy being pelted in the face with brass. Mine isn't damaging the cases as badly as yours appears to be. Mine are showing a similar scuff at case mouth, but not denting it as badly as yours.

Sent from my DROID RAZR using Tapatalk 2

[SpankMonkey]

Speer lawman 124gr, like I said above, i shot an equal amount through a PPQ with no issues.

The extractor mark and the dent are on the same side, pretty much inline with eachother.

Replace your recoil spring. Your running to fast.

[tdoom15]

So I stripped everything down and gave it a good cleaning. There was an unbelievable amount of gunk build up from the striker channel being soaked with oil. This is the 2nd used gun I've bought that has been this way and I don't understand it.

I shot 150 rds through it this time with only 1 casing to the face, and probably 3/5 had dings (down from about 90+%) in the brass, but the dings were NO WHERE near as severe as before. Ejection was a little erratic but overall very positive. I think this solved the majority of the issue. I may pick up another extractor and RSA just to play with it, but I'm pretty happy with the results if it continues.

Thanks everyone for the help.

[Lincoln7]

I was getting the same dents/scrapes to my brass from my Gen 2 G17 I recently picked up. I reshaped the face of the ejector (336) to make it contact lower on the casing during ejection and my dents are almost completely gone. This is a technique I've often applied to my 1911's. I will try to get some pics up for you of my final ejector shape soon. I used a small metal file then finished with a medium stone.

[Matt O]

Previously I hadn't checked my brass when I was sweeping it up, but I just pulled a couple out of the pile and it looks like I've got similar marks. Ammo is Aguila out of a gen 3 G17 with about 6500 rounds through it (all springs changed at the 5k mark).

I was initially saving the brass for when I get into reloading at some point, but I wonder if this kind of a dent to the case mouth would inhibit that.

[C4IGrant]

As others have mentioned, clean everything (specifically the FPS and extractor). Pull them out and inspect. Clean out the channels where they live.

If you are using mags that are from 2008 then the mag springs are TOAST! Put Wolff + power springs in them (or at least new Glock springs) and then see what you get.




C4