We all know the 270 is a great round, and there is little to choose between it and the 280.
But with the disadvantages of (slightly) lesser case capacity, lesser selection of high BC bullets and rifles twisted properly to shoot them, and a (slightly) smaller bore diameter, all of the advantages lie on the 280 side of the ledger. You cannot deny the facts (unless you're a 270 apologist).
Most of the advantages go to the 6.5x284 as well.
Looking at the 6.5x284 and the 280, and then saying that the 270 is better than both of them
Kinda like saying the 8mm is better than a 30 or 338
Clearly your plans to upgrade your 270 to 280-like performance, and your pussy hunting activities with the 270 are very manly endeavors.
But for the rebarrel, why not just go 280 and have a bunch of bullets to choose from
