6.5CM, is it better than the 260 no. It is a little shorter so you can load bullets longer to take advantage of the case. I like the 130gr class of bullets for the 6.5 for a balance of speed. With 130s was getting right at 2900fps using H4350. Hornady makes really good ammo for it, have made hits on less than 1/2 MOA targets past 500 yards with factory ammo. It is a well balanced round. It has killed, Elk, Nilgai, Black bear, deer, hogs. With the bullets available today you have many options.