There are some talks in the long range community of how well does the 6.5 Creedmoor perform against the .243. From a ballistics view the 243 and 6.5 are almost identical out to 1100 meters. The 243 has an edge as far as bullet drop is concern. If youre a numbers guy/gal, take a look at this: .243 Nosler 105gr BC .571 Muzzle FPS 2846 Tansonic 1359 at 1100 yd total drop 383 inches.