I know it's ridiculous to even think about at my level, but our current conversation and your 2s times reminds me of this and makes me want to strive that much more to maybe attaining this skill/quickness one day. (Even though it is only two yards)
http://youtu.be/O8QrWm3Acc0
Hard to say. It is subtle until it locks your gun up by not going fully into battery. Once you get it open you can see the bulge towards the case rim. I've only had it happen once in the last 1,000 or more 9mm rounds I've reloaded but had 3 last night that were bulged badly. 2 were headstamped with a name I'd never heard of but one was Winchester. Almost like they didn't completely get resided during the reloading process.
The odd part is they were so close together during the range time so I was basically pulling them from the same batch of collected brass. I just need to have a Go/No Go gauge and gauge all my 9mm from this point forward. if I'm going to keep running range brass. I just wonder if they are being resized but during some other part of the process they are bottoming out in one of the other dies and getting a bulge from that.
). 
It doesn't sound like it's a specific manufacture brass problem to me.
I think a Lee Factory Crimp die would settle the issue for you. I run all my rimless reloads through one. For semi loads, I check them in the barrel (cause I'm too cheap to get a go/no go gauge
FCD, that's what you need. If you press has an extra station you can put it in, that makes it all the better
Edit to Ask: Do Glock 9s have supported chambers?
Press does but I don't know think it is a crimping issue. The brass itself doesn't appear to be traveling all the way into the resizing/depriming die so I wonder if I've gotten into a mix of some range pick up brass that simply won't chamber in some guns. Brad had his SR9 there and it chambered fine in his so I don't know if my barrels just have a slightly tighter tolerance or what the case may be. And the brass that is giving me fits are some that must have picked up around the same time since they all came out of the same batch I tumbled.
In the end I'm just going to have to do the barrel method since I don't want to buy the gauge either.
The secret of the Lee FCD isn't in the crimp. It resizes the round back to spec as well as crimping. Because I shoot lead I keep the crimp backed all the way out on it and put a roll crimp on in the stage before.
I've only had about 3 in the thousands that I've reloaded here lately. That might not be a bad step to take in order to insure they'll chamber in everything I have especially if I'm going to not be too overly picky on the range brass. I don't know if I'm being a bit too picky since I don't tend to shoot a ton of 9mm and in the end I am only out a few primers if they make it through the press and not pass the barrel test. Still, I think I'll look into picking one up when I make my next order. Sounds reasonable enough
Do you set the FCD up differently than normal?
The adjustment screw should not be an issue. Have you got it set where you want it and left it there? Not saying you did, but sometimes guys get impatient when the spout cool off and raise the plunger up. When everything gets hot, well, you get a mess. . As Brent mentioned, most guys don't like the FCD with lead because it does size the lead down as well. I like it for that reason as my barrels seem to enjoy .451. Pretty sure I've seen you not have rounds settle in before. I thought it was just the Glock being a Glock but it possibly could have been ammo. I like it for that reason. I'll be putting together some jacketed loads for nationals and will tinker with the crimp setting then.
