So 3005 FPS at sea level (I’m at 167 feet) gives me the 2000+ FPS impact at 450 yards. That’s the loony goal for a new 6.5.
And 2900 fps at the muzzle will give you 2000+ FPS at 425 yards, 1972 @ 450. Close enough, I wouldn't worry about the last 100 fps.