Thanks for all the info guys.
I will look at the Whelen's twist rate! it might be a deal breaker...
The 30-06 will work for the 308 Norma, and it would be a simple reaming job.
On the 358 Norma, I am still looking for a Schultz & Larsen rifle.... They were one of the few that made them in the 358 Norma!