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2750 FPS is easy in a 24inch barrel and long action or a short action with AI bottom metal and a Accurate mag without a binder plate max col 2.950"
I had 150gr ELD-X going at 2758 FPS (MagnetoSpeed)...

The Cm case is shorter than a 260 so the chamber end of the barrel would have to be cut, barrel re-threaded then reamed

Here's my take on it.
If we compare the 308, 7mm08 and 6.5CM or 260.
The 308 hits harder at normal hunting ranges, the 6.5 has a flatter trajectory and less wind drift, the 7mm08 sits right in the...