Well I know for a fact at least one person at Glock knows about this thread, because I e-mailed him it to take a look at my brass pictures.  One would hope they'd at least poke around the forum a little, especially since there was at least another Gen4 FTF problem in the same forum (Panda's).  Something is up I have to think.  Whether Glock is actually officially aware of it or not, who knows.  The problem is the 10mm is such a niche round compared to .40 and .45, that when we have problems, we're nats.  When they have problems, they're an attorney in your face.  Going to ping the guy I e-mailed this thread to back, see if he can take a look at our issues again and maybe escalate the case up to Glock.  At this point, it's not an ammo problem.  This is a Gen4 issue with real power 10mm, 10mm that is not outside the bounds of what 10mm is supposed to be.

I e-mailed Kevin at Glock back last night asking if perhaps there was another person at Glock we should be contacting.  Unfortunately I missed his call to my cell today, both of my parents require frequent medical care and today we were in the doctors, and again unfortunately, we'll be there Monday and Tuesday as well.  Worse work for me is nuts, so I can't even call him back.  I'm literally on two calls right now, bouncing back and forth between them.  The only thing I can do right now is shoot him a hasty e-mail and hopefully get in contact with him next week (but my mom is having surgery on Tuesday morning, so who knows).

Well, I heard back from Kevin at Glock yesterday, we traded a few e-mails.  In the end, I believe we arrived at the problem with Glock validating no issues with the Gen4 G20 (or any other troubleshooting they do):  They use CCI Blazer to test with (unsure of loading); he said they test with ammo meeting NATA/SAAMI spec, which CCI Blazer does, he confirmed that later.  I sent him the link to the PBR site for the 165gr Velocity Supreme I am using, along with the pulildown for it and for CCI Blazer 200gr TMJ on this site, so he can see the difference in power levels.

If the Gen4 G20 is having FTF issues with mid to high power - but within spec - 10mm ammo, I think they're going to have to move past CCI Blazer to do proper validation testing, which was my point in my last e-mail to him.  Hopefully he or someone else from Glock will think about the problem we've got here, decide to test with higher power ammo also, and get back to me.  The only other thing I think they could do, if they want to test with just weaker ammo, is to qualify the Gen4 G20 for 10mm ammo up to a certain power level.  Obviously I think everyone would rather them test with the mid and high power 10mm and make their design work with that, but Corp. are Corp., I know how they work.  Lets hope Glock lives up to Glock Perfection rep!

I still wish you good luck getting through this, if they don't look this over with the higher impulse ammo and film it at high speed, then play it back in slow motion they may never grasp what is happening.   

The CCI Blazer fits the SAAMI pressure values but is fair piece from reaching the 37,500 psi of full power.  Here is why I state this;
Alliant 2006 data shows the 200gr FMJ over 7.7 grains of Power Pistol @ 1,145 fps with a pressure of 35,600 psi (still 2000 psi below the SAAMI MAP for 10mm & only 600 psi above 40S&W SAAMI MAP)
The CCI Blazer 200 FMJ "pull-down" showed 7.2 grains @ 1050 fps (even less pressure and impulse)

Hell, Alliant 2006 data shows the 40S&W using 6.3 of Power Pistol @ 960 fps with a pressure of 33,700 psi

I don't know if this will help you situation but I am trying to show some facts to support your dealings. 

With what they are testing is not much more than 40s&w loads

Better off buying a 40 and saving money with the cheaper ammo if the 4gen g20 is not up to hot loads

Thanks for the info The_Shadow!  I knew it was under the limit by a good amount but to quantify it like that is definitely better!

Glock has a forum now, so I just registered on it and posted: http://id.glock.com/answer/question/view/id/120605

If that fails, I'll try calling Corp. and picking Sales or something.  Right now I can't help but feel that the Gen3/Gen3SF built up a very good 10mm rep for Glock...one which the Gen4 is quickly destroying.  You'd think Glock of all people, with a 'Glock Perfection' motto, would have the biggest interest in quashing that.

Wow!  I checked a couple of threads out there, answered a question, and...low and behold, Glock deleted my question to them!  WTF?!

I simply asked if Glock could tell me where I could submit feedback to on a testing gap in their RMA QA for G20 FTF - which we've clearly established I think, that it's a gap.  They then delete my thread, and then, on top of that, don't even have the courtesy to send me a PM on why they did so.

I guess a call will now be in order.  Too bad I live so far away, else I'd just drop in...

How dare you question Austrian engineering. You know, Gaston's hot, young wife designed the Gen 4.

Seriously though, the Austrians can be funny about that stuff, especially in public. What do us silly Americans know about guns, anyway? Even 10mm guns, of which the 10mm caliber, along with the .40, .45, and .357, were all developed in the USA.

Quote from: chucky2 on April 18 2014 10:36:19 AM MDT
Thanks for the info The_Shadow!  I knew it was under the limit by a good amount but to quantify it like that is definitely better!

Glock has a forum now, so I just registered on it and posted: http://id.glock.com/answer/question/view/id/120605

If that fails, I'll try calling Corp. and picking Sales or something.  Right now I can't help but feel that the Gen3/Gen3SF built up a very good 10mm rep for Glock...one which the Gen4 is quickly destroying.  You'd think Glock of all people, with a 'Glock Perfection' motto, would have the biggest interest in quashing that.

I just tried to register for that forum. I want to see what you were talking about.