Cor-Bon, Federal, HSM, Remington, Black Hills, Nosler, and Grizzly have a total of 22 different flavors for the 260 at Midway (
http://www.midwayusa.com/find?&sortb...mensionid=9844). One should expect then that factory ammunition will be available for quite some time.
Granted, the price is a bit higher because of the military connection for the .308 but you will likely not shoot all that much anyway, or will get hooked on reloading.
Go with the .260!