Bad & Jeff,
Bad, you are right about the 6.5x55. With a heavy handload or the higher pressure European ammo, it's just about a ballistic twin to our .270. My relatives in Norway use it annually for moose, stag, etc.
Jeff the .280 is a great round. From my perspective, it gives up very little to the 7 mag in the field. It makes a great mtn. rifle in a lightweight package.
Jim