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

[DAVIDF]

Received my gun back from Glock Yesterday. They sent me the same gun back with paperwork that said "upgraded, inspected, within specs". I called to find out what they meant by upgraded. The rep said they replaced a number of parts. He listed all the parts (quite a few) but with a poor connection I could not hear to well. I do know that they replaced the ejector.

I will be going to the range to try it out this morning. Unfortunately, I don't have anymore of the heaviest loads from PBR or Underwood. I'll have to wait until they become available again.

[445 supermag]

Good luck David.  Mine is getting better but not perfect yet.

Brian

[DAVIDF]

Thanks Brian,

It ran perfectly yesterday. But, the warmest loads I had were some 165 gr PBR that Intercooler had sent me. I'll order some 200 gr loads from PBR or Underwood when they have them available.

[ShagZ]

Thanks all for your info on this. In the market for a g20. My heart wants the Gen4, but reading issues like this makes me want to hold off on the purchase. Also the Gen4 g20 are hard to find in my area.
I went to four dealers, all said will call you. Glock is behind making guns as a whole...

[sqlbullet]

Glad to hear the issues are being worked out.

[DAVIDF]

Thanks sqlbullet.

I ordered a couple boxes of Underwood 200 gr XTP on Friday, so I will be able to try it out this weekend or maybe Thursday. If it works with that, then it is fixed! I'll post the results.

[Filthy Phil]

Mine feeds everything.
Weak remington, underwood, and buffalo bore.
Different weights of the uw and bb

[445 supermag]

David,  I just got my 2 boxes of underwoods 200gr XTP's and I can't wait to see how they shoot. But going to be saving these (if accurate) for hunting purposes.

Brian

[DAVIDF]

Brian, I went to the range today & tried the Underwood 200gr xtp. It was quite accurate. I believe you will love it.

However, it didn't function in my Glock 20. I'm still having the same issue with the heaviest loads. They are not quite feeding into the chamber & getting lodged at the hood of the barrel or partially into the chamber.

I called Glock and they were no help. Told me they fired 105 round of Blazer ammo & it functioned fine. I told the Glock rep that I've fired way more than that of Blazer & American Eagle. I know those function fine. He thought those were "heavy loads".  My next step will be to go back to the store I bought it from & plead for help to get Glock to exchange the gun. If that doesn't work I'll be trading it.

[Intercooler]

Sorry to hear that! Maybe get a Witness 

[DAVIDF]

Yeah, or use only the Glock approved Blazer ammo  

[Intercooler]

    It's frustrating I know. I have been working on these two EAA mags I traded for and the first trial they were jam-o-matics  This last time out they were good after the tune except falling out the bottom. See how it goes tomorrow!

[445 supermag]

When my love affair started with the 10mm years and years ago when it first got introduced I got my self a colt delta gold cup 10mm and it was the BIGGEST piece of crap I have ever had.  I too had to sell it off .   Sometimes you have to do what you have to do. 

Sorry to hear about this David, and hope you find another 10mm that will make you happy.

Lifes too short to be unhappy with a bad gun that wont function.


Best of luck to you

Brian

[DAVIDF]

Thanks Brian & everyone. I'm tying to decide whether to keep this gun or trade for a Gen 3. It works with the Gen 4 recoil spring with everything but the heaviest 200gr loads. It has worked perfectly with the Gen 3 rsa & a Glockstore adapter with the PBR 200 gr Velocity Supreme. I didn't try it yesterday with the Underwood 200gr xtp, so I will try that next time I go to the range. If it works perfectly I will probably keep it. It has the best trigger of any Glock I've used so that would be hard to give up! And it is accurate. Plus, my wife shoots it well with heavier loads & particularly with the PMC 170gr hp that I keep in it.

All in all, it is more of a minor annoyance that it doesn't work perfectly with every load fed to it with Gen 4 rsa.

[445 supermag]

DavidF,  best of luck with your decision as I know it will be a tuff one.

Keep us posted.

Brian