RE: Would you buy a 30-06 and a 338 win mag?
From the Barnes manual
30-06 - 150gr bullet for deer drops around 7" at 300 yards with a 200 yard zero, 1.5" high at 100yards.
30-06 - 180gr bullet for elk drops 7.86" at 300 yards with a 200 yard zero 1.88" high at 100yards.
30-06 - 200gr bullet for moose drops 8.99" at 300 yards with a 200 yard zero, 2.22" high at 100yards.
Why would you need anything else?