Thanks for posting those!!! Everyone has an opinion, I didn't think the 308 was higher than the 6.5 CM. I do know my shoulder appreciates the 6.5 CM recoil though!!!
The .264 bullets have great BC, however they also have small bores with significant bullet surface bearing due to bullet length. That equates to greater friction down the barrel and slightly less velocity. Barnes and others now groove band their bullets, especially copper mono types to reduce friction and down barrel pressure on all calibers these days. This is some of the reason the 264 Win obtains somewhat lower velocity with 140 grain bullets in a belted magnum hull, especially with late 50s and early 60s bullet technology in 24” barrels. The 6.5 CM doesn’t require high velocity to compete at long range, it has the advantage of sweet spot BC that does its thing way out there at high impact velocity in lieu of its slightly lower muzzle velocity.
