Just wanted to come back to this great post with some notes in prep for my match on Saturday. I shot 20 rounds of match ammo (AE 124) through the G34 yesterday. I had installed a Wolff 4.5 lb striker spring, and wanted to make sure I didn't have any reliability issues (I didn't). The gun feels very crisp naturally, I previously had a 5.0 lb Wolff spring. So the trigger press is fairly easy, relative to the previous setup.
With that, I shot 5 round "groups" in terms of trying to stay at match speed, which is to say 1/sec. I experimented a bit with pinning the trigger. Whereas when I started the thread I was literally mimicking the timing I'd heard of hold the trigger to the rear, now I wasn't. As I shot the groups, I shortened the amount of time the trigger shoe rested against the back of the guard. By the time I was done, I still was holding the trigger to the rear, but let it go well ahead of and prepped for the next shot before the dot settled onto the target again. By this point I was back on the trigger, slack taken up, waiting to break the shot.
If I had to estimate actual "time the trigger was held to the rear", through these groups, it would be, in milliseconds (since I'm an engineer):
Group 1 - 1,000 ms (sight was back on target well before I let go)
Group 2 - 500 ms (sight was in process of settling when I let go)
Group 3 - 250 ms (sight had just about come on target)
Group 4 - 50 ms (I was on the trigger, slack taken up, when the sight came on target)
So by group 4, I still had the feeling of "pinning the trigger" or "finishing flat" or however you want to call it. This is pretty hard to put into words but I noticed that I felt better about my static accuracy. I think as time goes on and I can increase my hand strength and grip even more, to where I can hold the gun more still, the time I spend in pinning the trigger can be shorter still, but still give me a feeling like I am breaking the shot accurately. So, ultimately I feel like this experiment has led me to be able to shoot faster, but still be accurate. Obviously this all happens very very quickly, and is kinda hard to describe.
All these shots were taken 2 handed, unsupported. I am pretty sure the sight is centered to the ammo; I've been mentally averaging my group location(s) over time with this gun, making small adjustments to the sight after confirming it originally off a rest. Below is the target after either group 2 or group 4 (can't remember) but the other ones looked similar. This was at 10 yards. I clicked the sight down -6 MOA based on this (I'd clicked it up 4 MOA after the last match, but that was with BB 124) and the AE124. (There's no scale but IIRC this circle pattern is about 6" across.)
I have one more practice session likely for Friday to confirm my mental prep, then will shoot the match Saturday, just like Friday.
Thanks again @
professor for the constructive input!