S&B FMJ and fifty Armscor FMJ.
I got the labeling mixed up on the target below. The upper grouping was the S&B at seven yards and the lower one was the Armscor, fired at ten. I'm actually kinda pleased with the lower group, with the exception of that egregious flyer. That was fired mostly at a 1rd/sec cadence.
This makes 930 rounds since the Glock 20 was cleaned or lubricated, with two failures to feed (#401, #454) and one failure to fire (#598). 1070 rounds to go.