I tried this today at 50 yards. I shot one target using the grid, and one using 1/2" dots to shoot 10 round groups. I shot 50 rounds at each target. The rifle was a Voodoo 18" MTU with a Vortex Viper PST Gen II 5-25. Ammo was Lapua Midas +.
Temp was 25 deg. Time 1130am, sun rise 1004 am, no...