Hi Alvaro,
To tell the truth, I dunno if mass matters as much with Berger Hunting VLD's as it does with high-weight-retention bullets. All the Bergers penetrate 2-3 inches before starting to expand, and do a lot of interior damage, whether the bullet is aa 115-grain .25 or a 185-grain .30.
The real advantage in extra weight is higher ballistic coefficient, which reduces wind drift and increases impact velocity on longer shots. At 500 yards the 168 will be going the same velocity as the 140, and beyond that will be faster.
