Blazer Brass 124 grain is reliable but a little hot at 1090 fps out of a 4 inch barrel (135 PF). How long is your barrel? I tried Freedom Munitions 124 grain (new) (1065 fps, 132 PF, 4 inch barrel), but out of a case of 1000 I had one bullet setback and not useable. I shot 350 of the Freedom Munitions so far and had 1 failure to fire (FTF). The primer had a deep indentation, so the gun did its job. Because of the FTF I'm hesitant to use the Freedom Munitions for competition. I'll continue to use them for practice.
I ordered 2 boxes of Precision One 9mm 124 grain competition ammo (1044 fps, 129 PF, 4 inch barrel). If the rounds fit my CZ Shadow 2 chamber I will order a case and see how reliable they are. If the Precision One competition ammo is reliable I will use that. If not, I'll use the Blazer Brass.