Hmm on his 3rd barrel already.
He's replacing them at about 1100 rounds, but they're still holding just over .5 MOA. This is the same barrel life you'll see from other cases with similar ballistics when shot in the same conditions. The 6.5x284, 6-'06 and the other 6.5 short mags all have pretty limited barrel life when run hard.
I torched a 6.5x338 RUM Improved barrel in about 200 rounds by running it hard while working up baseline load data. My other one (identical barrel) is at 600+ and still shooting well because I've been much nicer to it.