I've shot AAC 77, Sig Match 77, Hornady 73 ELD, Hornady Black 75, Black Hill 77, legit Mk 262 Mod 1, Federal Gold Medal 77, and probably a couple that I'm forgetting. Through all of those IMI Razor Core is the closest I've shot to the Black Hills 77 / Mk 262 Mod 1, it's consistent, accurate...