Problems with failures to feed with Underwood Ammo, Gen 4 Glock 20

[Intercooler]

   We are going to do a swap of some American Eagle and PBR if he agrees to see if that makes any difference. I always wish I could see a video on some of these to see what is going on.

[pacapcop]

David,Glock Rep is full of it IMHO.I would not expect a Glock Rep to state there is issues with are Gen 4.Plenty of Glocks that work,esp the Gen 3's and 2's.Again my guess the Gen 4's being newer model are suffering new model syndrome.That's fine,let them correct it or refund it.Plenty of Gen 3's around.

[RRMan03]

Now hold on Intercooler.Just because you got promoted does not give you first shot at all that ammo. I am sure I have some low power load that old G4 Glock might shoot. My old G3 has shot all of them from a G20,G20SF,and G29 from lame to flame. Never a flinch. Of course it might be my skills as a shooter. LMAO !!!

[DAVIDF]

Too late RRMan03, it has already been shipped to Intercooler!

pacapcop, I think you are right. I will try the PBR and see if I get any better results. I may take it to a local gun shop that has a Glock armorer & ask if he would be willing to test it & see what he thinks before sending it back to Glock. I would like to get a better idea of what velocity/recoil it begins to fail at before sending it back to them. The one really good thing about the gun is that it has the best trigger of any Glock I've tried. But, if it doesn't function with anything but the weakest 10mm loads, then I might as well have bought another 9mm.

I don't think it is the ammo as I've visually & roll inspected each case in my hand including the ones that I have had FTF issues with. I've also measured a pretty large sample for OAL & width & nothing stood out as an issue to me.  In fact, Underwood's ammo had tighter tolerances (or less variation) in a sample of over 70 rounds from 20 boxes than the Federal American Eagles with a sample size of only 5.

As Intercooler mentioned above, he generously agreed to swap some ammunition with me. Although I don't think he'll have an issue with the ammo I've sent him, It will be good to confirm that it is not an ammo issue but actually an issue with my gun.

[sqlbullet]

A glock that doesn't eat anything?  That is a gun issue.

I suggest you check the GSSF calendar for an event near you.  They will have a Glock armorer on site.  He should be able to diagnose and resolve any issue you have on the spot.

[Intercooler]

That's interesting you can get on the spot help.

[DAVIDF]

sqlbullet,

Thanks. Good idea. Don't see anything very close until November, St. Augustine, FL.  Couple in Georgia, but a bit of a drive. I may go over to St Augustine just to see the event.

[Intercooler]

Odd question here. Do you have a small cell camera or video recorder you can take a video of it in action? We may be able to tell a decent amount off of that.

[4949shooter]

I had similar problems with a fairly recent batch of Underwood 180 grain FMJ in my Gen 3 20SF.

[DAVIDF]

4949shooter, what was the release date/purchase date? Wonder if it was the same lot? I believe I ordered mine on Mar 21, I have my receipt at my office.

Intercooler, my wife has a small camera with a video function. But not very good quality at all. I could try. Probably won't be at the range until next Sunday.

[4949shooter]

David, the purchase date on mine was January 20th.

[Intercooler]

I spoke to Kevin about the ammo. If I put some through mine with no issues does that rule it out?

[sqlbullet]

The inconsistency of the failure type seems to me to indicated something other than a consistent cause like out of spec ammo size.

I hate to ask, but do you have a good grip on the gun?  The types of erratic failures you describe could be due to "limp wristing" full power loads.

[DAVIDF]

I believe so, but I don't have experience shooting heavy autos. Lots through 44 mag revolvers, 9mm autos, & 45 autos.  I'm not as good with recoil control as say Tnoutdoors9 on his videos firing the same load through his Glock 20. Probably more like Larry Vickers if you have seen him on TacTV firing a Glock 20 at long  range.

[DAVIDF]

Intercooler, yes if it functions fine in you gun then it is definitely not the ammo. I don't believe it is with the variety of FTFs I've had. The shipment will be there today, so I'll be anxious to see how it works.