Hi Steve, Im shooting an impact .25, have you shot any of the above in .25? and how were your results at 30-50 yards? did you have to tune down your velocity to stabilize them?
I set the speed around 880 fps generally. Groups were good. Start around 930 fps then slow them down till the group tighten. If you happen to get down to 830 fps and still won't group then move on to something else.