RE: Rifle for dad....
I shop for ammo for the range at the spots that carry the best deals, .. that would be Dunhams, D1ck's sporting goods, Meijers, Walmart ....RThose spots carry the vanilla brands at the cheapest prices ON OCCAISION and on those occaisions the sales ALWAYS include 30/06, 308, and only sometimes the other stuff.
I get the good stuff when it is available at decent prices and when I don't have time to reload.
I never said 243 and 7mm/08 were hard to find, I said the 308 would be easier to find, and often cheaper.
I have a 308 and 243 and so watch both flavors .... the 7mm/08 I peek at from time to time.