I`ve had 2 Remington 700 customs, both Hart barrels, both shot the 140gr Nosler Ballistic Tip @ 3206 fps with GREAT groups with 63 to 63.5 gr N165 and seated .010" off the lands, this gave best velocity/accuracy, best accuracy only was with AA3100. RL19 was good but a little inconsistent, shoot like crazy but hard to duplicate, IMR4831 was another that shot VERY high velocities but was to hot a load when the accuracy began to take effect. Get you some Vhita Vouri N165 and have fun!!!