I don’t get it.
Anything the 6.5 CM can do, the 7mm-08 can do better, at least inside 700 yards. Recoil is comparable.
Anything the 7-08 does, the 6.5 CM does just as well, inside of 700 yards. And a lot more beyond about 700. 6.5CM recoil is closer to 243 than 7-08. Factory 6.5 ammo is much more available and cheaper than 7-08. And I'd bet money that 8/10 rifles will be more accurate firing 6.5CM. Especially with factory loads.
I was skeptical too, but bought a Ruger Predator in 6.5 just to see if it lived up to the hype. It was the cheapest way for me to experiment with the round. It's a $350 rifle that outshoots everything else in the safe. I always thought that my rifles and cartridges were more accurate than me. That I was the real limitation to accuracy. That may still be true, but I've been able to shoot this combo better than anything else. And I haven't even had an opportunity to really stretch things out past 400 yards yet.
