Al, the information you might like to read is on the Berger web site. It is the 3rd article down on the left at the side/ bottom.
See 3-1-2011 History of the Match Grade Berger Hunting VLD. By Eric Stecker. Good read.
Or as Charles says "Thicker are Target"
Centerfire
http://benchrest.com/showthread.php?49336-Berger-bullet-failure-test&highlight=Another interesting result was that while we were shooting the thicker jacketed bullets both barrels produced several blown primers. The .257 barrel produced 14 blown primers and the .256 barrel produced 5. There were no blown primers while shooting the regular jacket bullets.