[Doc Holliday]

There are HUNDREDS of posts on 9mm feeding issues

But, but, but....9mm is supposed to be the 'infallible shizz', the ultimate in self defense, the pinnacle of protection...at least that's what everyone throws out there when dismissing the .22LR caliber, every time.

 

[Danke Glock]

Great question...

No, not at all.

I can understand the frustration. Just reading through the thread, at times I’m inclined to think it’s an ammo problem and other times a gun problem. The G17L Gen 3 is a very reliable gun, but that doesn’t mean a bad one doesn’t slip through the cracks. Since the malfunctions went from many to a few, perhaps you have the odd GLOCK that needs a break-in period, which should be just about over.

 

[bigj82nd_684]

I thought it important to point out something else I noticed. With both the 115gr and the 124gr, the spent cases where being extracted nearly right on the ground below where I was shooting. The cases where not being extracted more than a foot from the weapon.

 

[Danke Glock]

I thought it important to point out something else I noticed. With both the 115gr and the 124gr, the spent cases where being extracted nearly right on the ground below where I was shooting. The cases where not being extracted more than a foot from the weapon.

Unless you have a problem with the tension on the extractor, it sounds like you’re shooting very weak ammo, which could easily cause issues with a G17L.

I normally practice with American Eagle 147 grn FP ammo. It’s very consistent and has worked reliably in all of my 9mm GLOCKs. Try to run a couple of boxes of that through your gun. I also find it to be very accurate and precise from my GLOCKs.

 

[9x45]

There is no adjustment on Glock extractors, short of grinding down the depressor plunger spring. And there is no reason to that because they never wear out being a compression spring. However cases at your feet is an indicator of a low power floor. Did you chrono those rounds? What brand?

 

[Danke Glock]

There is no adjustment on Glock extractors, short of grinding down the depressor plunger spring. And there is no reason to that because they never wear out being a compression spring. However cases at your feet is an indicator of a low power floor. Did you chrono those rounds? What brand?

Just because it can’t be adjusted doesn’t mean it can’t be a problem. There could be a problem with the etractor itself or the extractor depressor plunger spring.

 

[bigj82nd_684]

Unless you have a problem with the tension on the extractor, it sounds like you’re shooting very week ammo, which could easily cause issues with a G17L.

I normally practice with American Eagle 147 grn FP ammo. It’s very consistent and has worked reliably in all of my 9mm GLOCKs. Try to run a couple of boxes of that through your gun. I also find it to be very accurate and precise from my GLOCKs.

Question...

If I should be using or trying a "hotter load". A 115GR has a Muzzle Velocity of 1190 fps and a Muzzle Energy of 362 ft. lbs., a 147GR has a Muzzle Velocity of 985 fps and Muzzle Energy of 317 ft. lbs. For reference I am referring to a Winchester white box 115GR versus a Speer Lawman 147GR. If Grain refers to weight of the bullet, how is going to a 147GR going to a "hotter load"?

 

[Danke Glock]

Question...

If I should be using or trying a "hotter load". A 115GR has a Muzzle Velocity of 1190 fps and a Muzzle Energy of 362 ft. lbs., a 147GR has a Muzzle Velocity of 985 fps and Muzzle Energy of 317 ft. lbs. For reference I am referring to a Winchester white box 115GR versus a Speer Lawman 147GR. If Grain refers to weight of the bullet, how is going to a 147GR going to a "hotter load"?

I think of it in terms of power factor, which usually gives me an indication of what to expect in terms of recoil impulse. Given your numbers, the power factor for the Winchester is 137 and for the Speer Lawman it’s 145. Regardless of what Winchester claims, I’ve found its ammo to be very inconsistent. If the ammo is barely cycling your slide, then it would seem the ammo is under powered, or your gun is over sprung. I mentioned the American Eagle 147 grn FP ammo because I’ve shot it through most of the GLOCK models in 9mm from Gen 3-5 and never had an ammo-related problem with it. It has a reported velocity of 1000fps for a power factor of 147, which is similar to the Federal HST 147 grn ammo I carry.

 

[bigj82nd_684]

I think of it in terms of power factor, which usually gives me an indication of what to expect in terms of recoil impulse. Given your numbers, the power factor for the Winchester is 137 and for the Speer Lawman it’s 145. Regardless of what Winchester claims, I’ve found its ammo to be very inconsistent. If the ammo is barely cycling your slide, then it would seem the ammo is under powered, or your gun is over sprung. I mentioned the American Eagle 147 grn FP ammo because I’ve shot it through most of the GLOCK models in 9mm from Gen 3-5 and never had an ammo-related problem with it. It has a reported velocity of 1000fps for a power factor of 147, which is similar to the Federal HST 147 grn ammo I carry.

Good intel.

Just order some Speer Lawman 147GR.

I am hoping the spring will loosen up and maybe will cycle with the low grain range ammo.

I too carry HST 147, the best...great stuff.

 

[9x45]

If the extractor depressor spring was dead, it would fail on every round. If the ammo had too low a power floor, it would fail on every roiund. The issue is only a few times. Nothing in the gun changes, or the ammo. It is a shooter issue.

 

[Danke Glock]

Springs can weaken over time are get fatigued and not cause a failure on every round. If there is a problem with the extractor itself there can be deviations in how it grabs the cartridge. He’s not shooting match ammo, I’m sure there is variability across rounds, particularly Winchester range ammo.

 

[naughtymoose]

Run about 2-300 rounds of nato 124 ball. Then get back us. Your problems will vanish.

and in my biased opinion- win white box is junk ammo.

 

[BigMoneyGrip]

If it doesn't have a 47021 ejector in it, put one in. They solve a lot of the issues in the 9mm guns.

 

[DeltaFiveBravo]

Empty cases landing right on the ground isn't an extraction failure, it's an ejection failure.

Feed, Fire, Extract, Eject. Those are the four stages of a semi-auto's operating sequence.

Likewise, failure to feed, failure to fire, failure to extract, and failure to eject are the four kinds of stoppages that can happen in a semi-auto's operating sequence.

Something seems to be retarding the velocity of the slide during extraction. Your pistol is extracting the case but it's not striking the ejector with enough force to energetically expel it from the action.

 

[G21.4Me]

May I offer a suggestion: Whenever you're new G-17L is not in use, leave the slide open and locked back. You can do this for as long as a week or two at a time without harming the gun.

This should soften up your recoil spring and cause it to take an operational "set". (Personally, I do the same thing with brand new magazines; and I keep them fully loaded for a similar amount of time.)

Any brand new polymer frame is going to be stiff and needs to be broken-in. With my own Glocks, I've run between 500 and a 1000 rounds of ordinary quality, range ammo through every new polymer frame BEFORE I'm willing to carry it for self-defense.

I'm almost positive that your current Glock problems will eventually straighten themselves out.


NOTE: In my opinion, every new 9mm Glock should have: (1) a 47021 ejector, and (2) a machined steel extractor like the "Alpha Wolf" from Lone Wolf Distributors.

 

[racer88]

Just buy a Glock! Oh... wait....

For reference I am referring to a Winchester white box 115GR

I’m sure there is variability across rounds, particularly Winchester range ammo.

and in my biased opinion- win white box is junk ammo.

Yep, yep, yep. WWB is the worst ammo I've shot. It wasn't always that way. But in recent years, something changed with WWB.

It didn't cause stoppages in my experience (as I recall), but it was throwing "flyers" all over the target. I'm pretty good at "calling my shots." I know when I mess up before I even see the errant impact on the target. With WWB, there were many that I KNOW I didn't flub, but the impact was WAY off.

I don't buy WWB anymore.