As I mentioned in my introduction, I'm going to be shooting several different brands of 10mm ammo to see which one I shoot best with my Glock 20.
With that said, I was able to compare Corbon 155g DPX to the Buffalo Bore 155g TacXP today at the range. In short, I shot tighter groups with the Corbons, and they were the first box of shells I've ran in the gun. However, there was one failure to eject with the Corbon. I chalked it up to beginner's user error, but there are other reports online so there may be something to it. I have the targets and will post photos for comparison.
Grouping patterns were similar, I shot both high and slightly to the left.
All in all:
1. Corbon: Questionable reliability; Most accurate for me
2. Buffale Bore: Gun ate bullets and wanted more, appeared to be of high quality manufacturing; Accurate
I am not in love with the trigger or the sights. I will have a trigger upgrade to improve the trigger brake, and put on some adjustable sights. Laser/light combo is also in the pipe works for nightstand duty.
First impression of the Glock 20 is that I'm not as accurate with the 10 mm as I am with 357 sig and the 10 mm is not as snappy.