To be honest, I am not sure that Sako barrels are as fast as some others. They seem have a longer throat than the magazine will allow for OAL. A gunsmith told me they have something like a forcing cone, like Weatherby, that aids in accuracy, I don't know. The only reason I don't use the 280 more is that short actions are easier to handle for me and I think that is why I grab the 7m-08 (plus I just love the 7m-08). But with the long action calibers and less than 24" barrel you might lose what, maybe 50-100fps. That is nothing. Look at trajectory tables, it really is nothing.
Now I have not chrony'd any of my Sako's except the 280. So my facts are very limited in scope. With 140 gn bullets (Ballistic Tips, Accubonds and Sierra) my 280 was real consistent at 2850fps. That was with a warm load but not a hot load. Maybe my 7m-08 or 308 would show something else.
But I have had 6 Sako's (still have the 3) and helped each of my sons to buy theirs-a 270 and a 30-06. I am not well off, I save a long time to get my Sako's and 4 of mine were used. But I could not ask for a better shooting rifle with a better trigger.
Have fun shopping.
Long