I would rank the .257 Wthby as the #1 barrel eater.

Your definition of "best" almost seems to be which gun can squeek out the most fps regardless of the cost in powder, brass and barrel life.

I look at "best" far differently. Best to me is the most versatile and efficient.

I'm amused at everyone's love affair with the 7/08 when this cartridge is virtually identical ballistically to the 7X57 that has been around for longer than most here have been alive.