I have a 7mm mag and use a combination of 160 accubond on anything inside 300 yds and the 162 a-max or 168 berger on anything past 300 yds. I have the 160 accubonds in the magazine and swap to the a-max etc for the long shot.
I have shot red deer, fallow and tahr with the 162 a-max from 358 to 638 yds, all but one shot were complete pass throughs all but two were one shot kills (one of those was the shooters fault not the bullsts) most shots were DRT.
I would be reluctant to use an a-max on a bear at close range.
I haven't shot anything as big as an elk with the a-max (not too many in NZ) but take a look at BOTW to see what they are doing with the 168 berger on elk.
I sight in for the a-max and then see where the 160 accubonds hit, luckily for me they are essentialy the same point of impact.
I got the 168 bergers to shoot within 0.5 MOA first time, use the method desrcribed in this thread http://www.longrangehunting.com/for...accuracy-berger-vld-bullets-your-rifle-40204/
So far, with the bergers, I have taken one red deer at 594 yds, complete pass through, the animal dropped on the spot with a high shoulder shot, but did require a finisher as the bullet was a bit high and didn't penetrate the chest cavity.
Hope all this helps,