USMC1371, I'm at Boomershoot, helping run a Precision Long Range Rifle course and sitting here eating dinner with LRRPF52, LR1955, and Milanuk (Who shoots for the US F Class team and owns a world championship and a couple National Championships) and we are 100% convinced that there is no significant coriolis effect that needs to be considered when shooting the Grendel, it simply will not shoot at a distance lengthy enough for it to be significant.
You seek escape from pain. We seek the achievement of happiness. You exist for the sake of avoiding punishment. We exist for the sake of earning rewards. Threats will not make us function; fear is not our incentive. It is not death that we wish to avoid, but life that we wish to live. - John Galt