Shot the grendel some more today. 5 groups. Changes this time. JP grendel bolt. All changes. Lantac E bcg, JP bolt, JP Scss H2, JP oversize take down pins, barrel 50 ft/lbs bedded with 620, Surefire Warcomp,Vltor Emod stock. Optic: Zeiss DL 2-8x42 Clean bore to start. All groups in order...