Not necessarily, his argument is that the .308Win. doesn't have enough velocity to carry the large .30cal. payload effectively. I agree with his assessment. You sacrifice both sectional density and ballistic coefficient by going with lighter projectiles, or a great deal of velocity by going with heavier ones. OTOH, he likes the 7mm-08 (which has less recoil) as well as the .30-06, both being closer to the optimal caliber/case capacity relationship, and thereby providing better ballistics.