If it is multi species we're after, then yes definately a premium bullet is required. Up until I had a 338-06AI built my only big game rifle was a 270. The only weight bullet I shot was 140gr. And in that weight I shot a 140gr FailSafe to keep thing s simple. Took Elk, Moose and Deer with that load having complete pass throughs on all of them. But again, for deer alone I'm convinced that premium bullets are not required. In fact I think cup and core bullets result in more devastating, and thus quicker kills.
