The 300 ultra will work just fine, but i would use a different bullet. Go with a 180 grain barnes triple shock or a 200 grain partition. Those accubonds get sketchy at close range with alot of speed. Good luck!
My load was 101 grains of r25, remington brass, fed215m primers, 168 grain barnes triple shock. Bullets seated out as far as the magazine would allow. Remember, reduce and work up.