MEP,
Your son did not take the easy way out; BSEE is something to be proud of. Some good advice above. Since he has the beater portion of the 7mm collection covered with the Davage why not have a nice one. A M70, Kimber, Cooper to name a few. I always like having at least one nice rifle and one I’m not worried about beating up at least in each caliber. Often take and use both on hunt’s depending on weather. Always nice to have a backup.
Sure hope the migraines keep getting better; my son had some minor issues with them but nothing even scratching the surface of what your family has gone thru.