Any experience with this round?

It appears these are built on a long action, seating the bullets way out.

142gr@3000 fps or so...

Maybe some guys out there have some .264win.mag. experience on game and can lend an opinion? or 6.5rem.mag, or 260rem?

the 6.5 has very high BC and known for accuracy, and light kicking.

Would one just be better off with a 280rem/AI or something more popular with good BC's?

Also does this round require 26" barrel? 24" 22"