Re: 185 Bergers in a 20" .308
I shoot them occasionaly out of my 26" barrel and they do ok, also a 1:12" twist.
I cant recall the exact load I was using for varget, but my rifle allows me to push the boundaries without overpressure.
Keep in mind they will shoot slow and you will lose a bit of FPS out of the 20" barrel.
I wouldnt go any heavier in my barrel. They shoot too slow and right on the edge of needing a faster twist rate, so when they drop out they drop out hard.
Are these the VLD or non VLD? If its a VLD i would just go straight for the lands I work your loads up from there.
I much prefer the 155 scenar to just about any match projectile in a .308win. I think in a .300winmag or .300wsm these projectiles would be fantastic