Yep. Barrel life.
Did the 6.5x284 and it wasn't too kind on barrels either.
The reality is that unless your a serious rifle shooter and reload your own ammo your just so much farther ahead going with 243, 270, 308, and 30-06. The average guy who would purchase ammo can get it less than other odd or larger calibers and it's found everywhere. Then if you have the reload but you can say load you 270 with any bullet you see fit.
