"I think you will find it offers no gains over the .260 Rem on the top end and no gains over the .243 below it"

Exactly!

It is a happy medium between the two. for better or worse, the 243 is here to stay. I dont think the 260 will be all that popular over time. with the 25-308, you could do away with both!

If I am going to have a 6mm, mine is and will be the 240 Wby. As fars as 6.5s go, I tried six or seven and they are all gone, too close the the King (the 270).