I finally got the Berger 105 Hybrids to shoot out of my 6mmbr today when I upped the charge to 30.5 of Varget and the speed to 2882. This is out of a 28 in 8 twist X-Caliber varmint contour. Shooting off a bi-pod and rear bag, I found I could not break my cheek weld after I started the string. Group size went from .8 moa to .38 moa at 300 yds. Maybe I just need a new scope? I know my Vortex HS 6-24X50 has parallax issues. I guess this just re-confirms it.