30-06
All game from Antelope to elk.
Ranges out to a max of 400 yards.

Like many others here it would be a 165 grain Nosler Partition, or perhaps a good bonded 165 from Nosler, Hornady or Swift.

In the 30-06 for all-around use, I doubt you can beat the 165 gr Partition although a very few others may match it.