I will quite happily site in the rifle with bullk 77 gr ammo and then fire precise, slow-fire, 5-round groups at 100m with your premium ammo. No problem whatsoever. I will even provide you wih photos of the groups. I will conduct accuracy testing with a Leupold Mk5 5-25x 50mm optic mounted. Extended "plinking" for longer term reliability testing will be done with a Swampfox 1-10x 26mm Low Power Variable Optic.