I personally find the .308 is more than sufficient to meet my needs for the typical hunting and shooting of game animals where shots are in the mid 400s and (hopefully) closer. The 30-06 is really a cartridge (in my opinion) that in order to be utilized to its potential, needs to be properly handloaded. When done so, that is where it really starts to outperform the shorter .308.
Similar to Brad's observations, in my lightweight little 20" Edge stocked T3, the .308 has enough recoil to be notable and you must really focus on solid fundamentals to achieve precise accuracy in the field, especially when you are dealing with often below freezing temps and less than optimal shooting positions. The lightweight rifles are difficult to shoot well, and the lightweight .308 is where I find my Goldilocks point in a rifle that will allow me to make a longer range precise shot, and is enjoyable to carry.
