A lot of good comments in this thread. I'm building a 7-08 and planning to use the 162 Amax as I like to stretch it out but it will depend how it all shakes out and what combination is the most accurate.

If you run the #s, the two cartridges are very equal. The 260 is an couple inches flatter and the 7-08 does better in the wind but their performance is very close.

With Lapua making 260 brass and quality 6.5 bullets available, the cartridge will be around for a while to be sure.