If you want superperformance like velocities just load with RL17.
I am getting 3012 FPS with 168 Nosler BT and 59 grains MAX in my rifle. My OAL is 3.41 and primers are CCI large rifle. According to quickload this load runs just under 65KPSI.
I also load the 200 grain accubond to 2720 FPS with 54 grains MAX and these velocities are from a 22" barrel.