raz: the 260 is almost the same as the 6.5 Swede. Both are 6.5mms. The 260 works well, and possibly best, with bullets up to 120 grains. The 6.5 works best with 120s, 140s and 160s. The 6.5 Swede is used in Europe for everything, including moose, boar and bear. The 260 might be a bit on the light side for that.
The benefit to the 260 is that is is a nice capable round and it comes in a short action with a lightweight bbl so is carrys nicely in the field. I just prefer that Mauser action and I like the 6.5. M2C. Mikey.