ORIGINAL: Scott Gags
Yes I have seen that before. See the link from your link with the one exception to the rule. I just so happened to be the 180 grain 30-06 loads!
http://www.gun-tests.com/newspics/pdfs/1-1-Exception.pdf
The links actually states to use this 06 load in lieu of going up to 300 win mag.
One of the first statements made in the article linked by schoolboy was;
We found that while both Light Magnum and High Energy do produce higher muzzle velocities, the results are not nearly as impressive as the advertising claims.
According to the link posted by schoolboy the greatest velocity reached with the 180gr bullet out of the high energy 30-06 load was 2831fps.
The greatest velocity reached with a 180gr bullet out of the hi energy 300winmag load was 3080fps.
In other words the 300win mag still produced 249fps more than the 30-06 using 180gr bullets.
Also mentioned in the article was that many of the hi energy loads including both 30-06 loads,showedsub standard accuracy in the rifles that they were tested in.