Ok here's a question for you .22 guys. I've been using only high velocity rounds and the dude at the gun shop said if I want tighter groups I need to get subsonic match rounds so I got a box of Eley tenex.
So the question is, why is a lower velocity round more accurate?
One thing I did notice is that ALL the CCI mini mag ammo cracks (i.e breaks the sound barrier) while this federal auto match stuff varies and some will crack and some will just pop which leads me to believe the velocity is inconsistent and some are breaking the sound barrier and some are staying sub sonic which could also explain why some are shooting high and some are shooting low.
I fixed the stock and got that tightened up. Didn't have much effect overall, it might have tightened up my groups from left to right but no real effect on up and down. I haven't tried shooting the Eley ammo yet though.