Re: what are your groups at 300yds?
I shoot 300yrds with my 10/22 tactical 16" and a bushnell 6500 2.5x16 tactical. I have a EGW 20 moa base and a shim (~30 MOA total) and I can dial ~50 MOA from my 50 yrd zero. (10/22 barrel sag sucks).
My gun likes wolf extra match, but mini-mags shot...