The whole of the Creedmoor family of cartridges are relatively easy to load develop. This includes the 6.5mm, 6mm and the .22 Creedmoor. I shoot the 6mm more for general chucks and prairie dogs but the newer .22 Creedmoor is an absolute screamer, even with heavy for caliber bullets such as the 80s and 90s. Be sure to match the twist rate to the bullets you intend to concentrate on using.