Re: Novice: 7RM out to 600 yds.
The a-max is a soft bullet. I used it on some feral goats at ranges around 200 yards. All of them dropped on the spot. I can't remember whether the bullets exited or not, I know on at least one billy goat it did not exit on a broadside shoulder/chest shot.
They would not not be my first choice close range bullet. But being soft you get reliable expansion at long range. My friend shot a bull tahr with the 162 amax at 630 yards, the shot took it in the back of the ribcage and passed through, probably taking the spine out as well. Bull tahr are tough animals with thick skins and solid muscles.
The accubond is a controlled expansion, bonded core bullet. It is designed to behave like a partition bullet, but with a polymer tip and better BC. If you were only to use bullet in a 7mm mag, this is the one I would reccomend.
If you were definetly staying inside 600 yards you could look at using the 140 accubond and ballistic tip, they are essentially the same bullet, but the accubond is bonded and a stronger bullet. They have the same BC and would probably shoot identically. This means you could use the ballistic tip for practice and the accubond on game.
For powder, H4831 SC for the 140's H1000 for the 160's, although people also like R 22 for the 7 mag.
Hope all this helps, sorry no experience with that scope (you could possibly re-post that questions in the optics sections)