While I have never used .30-06 FGGM, I do use HSM 178 AMAX load. The HSM is very accurate, I shot a 6 shot group at 1000 yards that measured just over 1/2 moa.
ETA I think the HSM is a bolt gun load not downloaded to .308 velocities like FGGM. The HSM requires 32 moa to get to 1k.