RE: .338 mag
I have a very good friend that killeda 6 pointer in WV with his 338 mag and had to throw away several pounds of shoulder meat. I'm not sure what round he was using but he said it really tore him up.
He went out the next year and bought him a smaller rifle based on his experience.
IMO it's too big. But look on the bright side, you won't have to track much!