I am assuming you are shooting a 338 win mag. My preference for longer shots is the 225 accubond. With a stiff powder charge of RL19, you should be able to get close to 2900 fps and the high bc of the 225 (.550) will give you the best between flat trajectory and retained energy. The 200 gr is a good bullet for shots to 400 yards in my opinion, then the 225 really shines. The 250 gr is also a good choice, depending on how fast your gun will shoot it. It will have more of a rainbow trajectory and some guns will max out at about 2700.