Probably lots “ better “ for certain situations, but none as nearly economical, 308 wins hands down due to sheer amount of component availability, cheap brass, surplus bullets, etc.
Example, I bought 10,000 pieces of once fired lake city 7.62 brass, $70.00 per 1000.
What would just 1000 pieces of once fired 6.5cm cost ? $500 ? I bought 7000 pieces of 308 for that cost.
I’m getting into 6,5cm for long range shooting, but .308 is my main large rifle caliber , I have 3 currently, a rem model 7, a rem 700 tactical in chassis, and a ar-10, and I’ll be buying more of them in the future for my grandkids deer rifles too.