I like the .338-06 because it is very efficient, effective and will get good velocity from some high for caliber B.C. bullets. Its a small sledge hammer. The AI version is a bigger hammer.
Just so you know, these guys are almost all for the fastest, newest and hottest new thing. They won't give you a lot of attention on the .338-06. It is one of the great and easiest to use wildcats, though. There are only a few ammunition manufacturers loading it, but if you hand-loadk its easy to make.