Great data, Darrell. That took some time & effort!
I just got a batch of the 125s, too. I started with 4.1 gr. of TG at 1.090 COL. I didn't chrono them but the grouping was horrible with some keyholes. I backed off to 4.0 gr. and 1.125" and they were better. Looking at Darrell's data, I think I'll drop another 0.1 gr and make them a little longer. Other than that, I've had very little smoke with the TG and the bore (stock Glock) is staying very clean. They do have a funny smell, though. Kind of like a cutoff wheel for an angle grinder.