I can push the 140 VLD to 3400+ in the WSM, but the bullet reportedly gives unsatisfactory results on game above 3100. The difference in accuracy between 3400 and 3100 is amazing and I'm sure barrel life is increased substantially. As far as I'm concerned, even at 3100 it's still a hot rod when compared to factory offerings in short action 6.5 chamberings. Pushing a bullet as fast as you can isn't always the best route when you look at all the dynamics involved.