And the 6mm has less recoil than the 257,
And the 6.5 has greater frontal area than the 257.
Minutiae! And you could hunt for a lifetime and never tell the difference in the field.
But if it turns your crank, carry on!
There does seem to be quite a few people that believe the .257 has advantages over other bore sizes, or at the very least, is different enough to justify owning one.
