there is no reason for an accubond not to exit at 308 velocities, have shot a bunch of accubonds and never recovered one yet, had one that didn't exit but never found it, that one hit a limb in flight on a buck at 455 yards, made a tennis ball sized entry and went entirely through the chest cavity long ways, don't give up on them yet, they are a great bullet.
here is an exit from a 160 accubond at 702 yards
RR