I picked up a bunch from Graf's a few weeks ago. Tried them out in my 6.5Lapua and averaged .395 at 100yds , 4-5 shot groups. At 465yds noticed a hair more drop than my 123 Lapuas. Rifle is a Barlein barreled Stiller action in a Manners stock.
This may be a very nice all around bullet for smaller 6.5 rounds. People need to keep in mind, the 123 Lapua does NOT have a .55 average G1 BC. In fact, when launched from Grendel velocities it averages below .5 from the muzzle to subsonic (this can be seen from Lapua's own CD data).
I expect the A-Max's actual BC will be very close, if not better than the Scenar and offer reliable expansion at long range. I've had good luck with the 140 so far, a good 123 will be a nice addition to the line.