RickF -
That is probably the best reason for choosing the .280 Rem AI.
I'm building a 6.5mm-06AI for much the same reason - the Interarms mark X Action I had to work with was a standard (.30-06) size and I didn't want to mess with the bolt face and rails to build a .264 Win Mag.
To be candid, though, I have to admit that it would have been cheaper to sell the Interarms action ad buy a .264 win Mag. The problem was I still woudn't have had the rifle I wanted, which includes a heavy match-grade, fluted, stainless barrel , trued action face, lapped lugs, pillar and glass bedding, custom engraving, etc. Sometimes it isn't about saving money.
