It's always nice to see when numbers jive that well! (for me as well as you)
Your question has surfaced elsewhere on this thread, and I gave the predicted BC's of the .338 bullets:
Bryan Litz joins Berger Bullets
Of course the predicted numbers may be adjusted once the bullets are actually fabricated and tested.
The BC's for all Berger bullets are within days of being updated on the website. Stand by.
I have in fact measured the BC for the 6mm 105 Amax:
G1BC = 0.492 lb/in^2 (average from 3000 fps to 1500 fps)
G7BC = 0.252 lb/in^2 (average from 3000 fps to 1500 fps)
As with most long range bullets, this bullet is a better match to the G7 standard projectile than the G1, so if your program allows, I recommend using the G7 BC.