In that range I would want a .308 Winchester first due to its popularity, availability of ammo and the ability to shoot a larger bullet.
I have/had all three and if varmints were on the list and you handloaded then the 95gr Vmax is a neat bullet to shoot from the 260 however that cartridge is just about dead.
I dropped off an arm load of stuff Friday with Ga Precission. You'd better warn them about those .260s. They said they can't keep one on the shelf for over a few days, and so need to get in touch with reality before they get over stocked!
