Does the b79 shoot better at certain velocities? Mine is switched to HPA but will (at 25yds) shoot three or four inside a penny then all of a sudden throw the next two or five all over.....then plant two more in the same hole before spraying three more, then plant one on the crosshairs or maybe two, then way off again. Is this normal for the qb79? I tried JSB exacts, FT Trophy, and several others, but it seems to shoot the CP domes as good or better than any I tested. I am shooting around 850psi from a ninja regulator, and am thinking about adding shims to increase pressure, hoping to get better groups. Maybe its just the barrels are cheap?
Thx in advance for guidance if any!