Have both (Sako A11 in 7-08 and a late 80’s Medallion in 300wm), the A bolts are a solid hunting rifle, the Sako is arguably one of the better production rifles ever made. If the action/trigger are still in usable condition I’d build off of the Sako.
I'm replying to myself so as to redact the 270 win from my list, recently picked up a Marlin X7 in 270 solely because it was cheap and hardly used. Shoots everything so far very well including handloaded 110gr TTSXs at a shy 3400 fps.
I would agree with this statement, I have used the 30 caliber on 6.5s, 7mms, and 30 calibers, and it works great on all of them, if there is a difference, I haven't noticed any.