There is no way I would buy a 338 while the 375 Ruger and 375 H&H are around. If you can't kill it with the 30-06-278-270 class rifle, I would jump to the 375. You can hunt everything on the planet with a 270 and a 375 Ruger or H&H. I can handle it all with a 270-7mm-08 and a 45-70. Throw in a 223 and throw out everything else.
