Most 9mm ammo and pistols are not that accurate.
Try telling that to my CZ 75B! I can tell you right off that it is hard headed and won't listen to you.
I find vary few loads that this gun won't shoot better then I can.
The last test I did with mix head stamp brass, 4.0 grains of Bullseye, CCI SRP and Precision Delta 124g JHP made a nice quarter size group (32 rounds) at 7 yards.