I have 5 **** on different Vortex scopes and rifles. I have shot 1.6” groups with one particular Custom .264 Win Mag - H1000 - 143gr. ELDX - Fed 215 mag primer. The **** works great. Started at (zeroed at 200yds) 400 then went to 400 then 600, then 800yds, then on to 1000. That was slowed down, to get everything right—- 1.6 inch group. I was happy! Almost as good as my 80th Birthday party.