You are correct and I agree! There
are less bullet choices then the 30cal, but so what I mean who really has more??? The 22 would be only one I can think of!!!
Any how, for bullets, you have a couple 150 grain's, a 170 RN, a 175 spritzer. then Remington has a 185 and 220G Corlokt and a Nosler a 200g Partition. PLENTY of excellent bullet choices.
Your spot on about eating the 308 but it WILL equil the '06 at similar pressure's. I don't like to admit it but your also correct it's a better 358win too!!
(It's near and dear to my heart too)
I say build one!!!
CW