I dont think the intention of the 6.5x47 was to ever match speeds of the 260?? I think it was built to best utilize the long 6.5 bullets with good powder in a smaller/efficient round. I have several rifles of the 6.5 caliber and my favorite right now is the 6.5x47. Its easy to load, easy on the shoulder and seems to shoot anything you put in it extremely well. If you wanna match the 260 in speed get a 260.