An article in Handloader some decades ago tested the .30-06 std vs. AI and iirc concluded that there was minimal difference in velocity if pressures were the same (using measurement of the pressure ring on the brass to .0001").
Looking at the Nosler manual it shows the 30-06 AI almost 3000 fps for the 180 out of 24" barrel. About 170 fps more than the regular 30-06. With the 200g there isn't much difference. If I didn't have a 300 H&H I might consider the AI.
