Re: to go 260 remington, or stick with 308
Here is a reference to an issue that had some great technical data concerning the issue:
http://snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=1611719
I can't come up with a link to the original article, but I have it in paper form in my stack of gun rags. I have observed similar data with my personal rifles, seeing .204 Ruger particularly outlast .223 Remington, despite more pressure, velocity, and a smaller bore.
The theory should hold true with .260 vs .260 AI.
ETA: <div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Barrel Life Considerations
Since I am pushing 139gr and 142gr bullets to 2950 fps, there is no reason to believe that my barrel will enjoy appreciable gains in longevity when compared to typical 6.5-284s and .300 Win Mags. I do not have much hard data back from customer rifles yet but my money is on the 1,500 to 2000 round count before things get unpredictable. Note that any high-performance barrel setup needs to be viewed as a consumable, much the same as tires on your car. If the rest of the setup is done correctly, new barrel installations do not require die, dope or load changes from your previous setup. This can be done fairly seamlessly and quickly. If one were to view the costs involved with travel, lodging, food, range fees, ammunition and other shooting expenses, periodic barrel replacement is really a small price to pay for top performance and consistency.</div></div>
It compares the author's EXPECTED barrel life to 6.5-284, .300 Win, etc. It doesn't not compare an observed difference between .260 Rem and the AI version.