[3blade]

Gotta think about your end use. Caliber/cartridge alone is no longer the question with modern powders and bullet designs. you aren't likely going to see a big difference in terminal result between the 308 class from 7 to 308 to 338, using high quality bullets. Dead is dead. The 7 is a little flatter, but not $1g worth.

I'd suggest shooting a tikka in 7 Mag before buying one. One of the less than pleasant experiences I've had.

Your 308 is going to be a great choice for everything here, you won't need to change. If you want something different, two ways you could go with this to perhaps change your real world capability. An ultralight, sub 7 lb (all in) mountain rifle in 7-08 or 6.5 cm. That's gonna be significantly easier to carry up mountains.

Or a 26 or 27 inch barreled, turret scoped, >10 lb, 7 mag/300/whatever flavor of fast and flat. That kind of rifle works great for stand/blind/cutline hunting when you don't have to carry it all day.