Covey, I should have phrased my wording a bit better. I was addressing PowderBurner and meant that the 30-06 that "he" speaks of, not the 25-06 is a better choice for elk. So to clear it up, the 7mm-08 is a better choice than the 25-06, but the 30-06 has the edge over the 7mm-08, again only my opinion. Just get a .338WM and be done with it.
Edited: in this post since the 30-06 has been entered into the conversation, we need to clearly define "06 as either the 25 cal or the 30 cal. The original question spoke of the 25-06 and the 7mm-08