I have 2 Mk12 Douglas barreled rifles, and one Krieger barreled AR, and a friends Mk12 shoots this load sub moa. And the same load also will shoot Berger 77 OTM, 77 SMK and Lapua 77 Scenar-l all the same. Bergers seem to have the lowest SD's
XBR 8208 23.1 gr
BR4 primer or Fed205M
77gr Berger...