I have killed two bulls with the .338WM and the 210gr Barnes TTSX. One was at 405yds and one was at ~100yds. Recovered bullets were text book Barnes. I also shot a Whitetail deer at 100yds with the same 210gr TTSX load......wanted to see how the bullet expanded (didn't want to hit any bone), so I purposely shot it low behind the front leg taking out the bottom half of the heart. The deer ran about 35yds and there was a blood trail that a blind man could follow. I really like the 338WM on elk and I don't think you could go wrong with the following bullets (use the one your rifle likes best): 210gr TTSX, 225gr TTSX or the standard 250gr Nosler Partition.