Odd man out I don’t really care for the 308 or the 243 for much although they are both classic effective calibers with great pedigrees. The 30-06 light & antelope/coyote gun I’ve owned both & never warmed up. I’d tell your buddy use elk hunting as an excuse to get the 300 magnum flavor he prefers or gets the best deal on & extend his effective range a bit. Just bought a 300WSM for the 16 YO grandson this year shoots 180’s well & not bad recoil for the light savage.