There is a particularly good book available that deals with this topic:
Dangerous Game Rifles by Terry Wieland (ISBN 978-0-89272-807-7) and should be available through Amazon or a similar online book dealer.
There is a whole section called "Stocking the Dangerous-Game Rifle". Essentially, Wieland suggests that laminates are about as good as solid wood, but heavier due to the glue (heavier is not necessarily a bad thing with a lot of recoil to tame). He suggests that the difficulty comes in finding a suitable laminate blank for your project and the difficulty of working with it.
The author goes on to a lengthy discussion of the pros/cons/availability of the various types of walnut (English/French/Turkish/Caucasus/Claro, etc.). I think he generally suggests a straight grain and proper fit for the shooter are the most important.
It's a good book and well worth a read!
I know from a lot of trapshooting that proper stock fit is important. I've heard from various sources that a dangerous game rifle should fit a shooter much like a shotgun. A hunter going after dangerous game may have to shoulder the gun quickly and get on-target in an instant, a stock that fits and gives a quick perfect sight-picture is desireable. Proper fit will also reduce the felt recoil (another lesson learned from tens of thousands of rounds of trap :~) ).