Called the 6.5 Rock.
Burns barrels as much as any overbore cartridge would/does.
The one I shot for a while was off the 270 case.
I wasn't overly impressed with it.
If I was in the market for a hot rod 6.5 it would be based off the 264 WM.
FYI I get 3000 +/- fps from the 6.5-06 (26" bbl) and a 142 smk, 140 berger.
most 6.5 pills like the 2900-3000 fps velocities as it is.