Most makers have different length actions.
.308, 7/08, .350 Rem mag, Short Action Magnums have an action and bolt that is about 3/4 of an inch shorter than...
long actions---30-06, 270, 300 Win Mag.
Some think they are more handy, and most are somewhat lighter.
That's why buying a .308 in a Tikka seems odd. A 30-06 gives you more case capacity, with no penalty.
