I know Berger recommends seating their bullets into the lands b/c they are longer than most. Those Bergers have some great BCs. I have some 190s that I have been meaning to work a load up for.
The ogive is so high that they pretty much have to be in the lands. That's why the BC is so good, because the long ogive prevents a secondary shock wave where the ogive and shank interface. Granted, as air density migrates so does the propensity for the second shock wave. The Accubonds and other "ballistic tip" designs have standard rifle ogives (not VLD) and as such the shock wave forms, adding considerable drag.
But with the .308 loads, you maintain supersonic flight for just about every range in Central Texas. Beyond 500+ is where the VLD Bergers should make a difference, due to maintaining velocity.
That's why I'm looking to stick with SMKs and A-Maxs.