I lived in UT in the late 70' thru the mid 80's. I used a .30-06 with Hornady Frontier 150 gr Spire Points (cheapest Ammo a kid could afford). SHOT PLACEMENT is where it's at. If you do your job, the .308win will do it's job.[u][/u] Over a 10 year period, I took 7-8 elk in the Monte Cristo area between Huntsville and Woodruff UT.
One thing that a great many do not realize, as they have never chronographed their ammo, is that a substantial amount of 30-06 factory ammo is very close to .308 velocities, or at .308 velocities.
Years back I had some green box Remington stuff that someone had given me that was the same projectile weight (165 grain) as the .308 handloads I was shooting. I recall that the listed velocity on the box and what the actual velocity was, was significantly different. Remington's 30-06 was a good 200FPS slower than what the box said. The .308 handloads were faster by a little bit. I don't recall the exact numbers but it was 30-40 fps range.
In spite of all the talk about how poor the 150 class projectiles seem to work on elk, I will stick with 155 Scenars in my little .308.. They seem to have a very consistent track record of putting elk in my freezer.