I went back the next day with a hundred rounds of the Sellier & Bellot and experienced ten of the light, off-center FTFs over the course of the range session: One round in ten. Something was definitely wrong.
I PM'ed a Facebook friend who works at Glock and asked for some suggestions. In addition to the Armorer's Manual suggestions of "Clean Gun, Replace Recoil Spring", he noted that I might want to detail strip the slide and make sure everything looked good in there, and try a different trigger bar as well.
I just so happened to have the complete trigger assembly from my Glock 37 handy, since it was currently sporting a ZEV trigger, so I tore the little 39 down to have a look inside and swap the trigger while I was in there.
|The tar-like sludge in the striker channel can't be helping. Did the previous owner not know to not lube that shit?|
Me: "Jesus, all the small parts are tacky...the slide lock, the firing pin safety, the striker spring...feel like they've been lubricated with the Pepsi and popcorn butter from a theater floor. I mean, look at this trigger bar... Here's the trigger bar that came out of my G37 after the 2,000 round test. It's kinda gray and sooty, but it hasn't been cleaned. Now here's the trigger bar from the G39. It's covered in a sticky layer of black cack, and I guarantee it hasn't fired no 2,000 rounds. It's like the gun's been lubricated with..."
RX: "Crisco. Congealed vegetable oil."
Me: *eyes widening* "Holy shit you're right." *spins chair to keyboard*
I'm going to hit the gun with some synthetic-safe Gun Scrubber to degrease it good, re-lube it properly, and then we'll start shooting it for realz, yo.