http://www.snipershide.com/shooting...-caliber-choices-comparison-applications.html This thread has been contributed over about 3.5 years to include a pretty good list of calibers and information about them.
In terms of trajectory the 7-08 and 260 are effectively twins, for an extended range shot the difference in wind and elevation is so small that if you put 142 SMK 260 DOPE onto 162 Amax 7-08 rifle you're still extremely likely to hit the target.
The benefit of 7-08 vs. 260 is longer barrel life, some say as high as 4500-5000rds compared to about 3000 for the 260 whereas the 260 has less recoil than the 7-08 because the moving mass is 15-17% lower and going out at pretty much the same speed.
There's not a lot you can't realistically hunt on this continent with a 260.
Another option which I prefer over the 260 is the 6.5 Creedmoor and my preference is based on the fact that I get identical exterior ballistic performance and about 800rds more barrel life on average.