Thanks for all the responses. I like the looks and handling qualities of the 18.5" 7600, but with the .308 ammo is more plentiful and cheap and it has less recoil than the 30-06. This is intended as a "fun gun" rather than serious hunter, for which I use bolt actions. The 30-06, however, would handle heavier bullets better than the .308. The 30-06 would have much more muzzle blast in a short barrel. Maybe I should get a 30-06 and shorten to 20".
So many choices. So little money. So few years left.