Re: 6.5-06 ai loads..?
I experimented with both the 140 Beger VLD and the 142 SMK. Never got better than 3/4 to 1 MOA no matter which powder (tried H4831, H1000, IMR 4350) I tried. Bullets were stabilized, but just not the tight groups I had hoped for. On a whim I tried the 130 AB and started seeing tighter groups. The velocity is up there, so I decided not to mess with it.
From time to time, I think about going back and experimenting with the 140's, but the higher BC's don't make enough difference over my current load to where it matters. Again, probably due to the higher velocity of the 130.
Good luck in your search. The 140's are ideal and I would start there.