RE: Ammo for .308?
The only issue with the 180's in the .308 Winchester is that when you are seating to the standard short action magazinelength of 2.800, it is necessary to seat most 180 gr. bullets pretty deep - reducing the effective case capacity of the cartridge. This is particularly true with long bullets like the Ballistic Tip, Accubond, or Barnes X. Not much of a problemwith round nose bullets or shorter spitzers like the Speer Grand Slam.
And when you start comparing the ballistics of the 30/06 factory rounds and the .308, you will notice that they areabout the same with 150 and 165 gr. bullets - butthe .308falls astep short with most 180 and 200 gr. projectiles - duemore to this seating depth issue than the difference in case capacity between the two cartridges.