I would love to see gun manufacturers quietly change the twist rate in some of the popular cartridges to take advantage of the high BC bullets now available, and throat them appropriately for magazine lengths. Had they done that with cartridges like the 22-250, .243, .260, 25-06, and .270, I wonder if we would have even seen the development of things like the Creedmoors and the PRC. Though there is the short action factor, and I happen to prefer short actions...
All that being said, the 6.5 Creedmoor is currently my favorite cartridge. They just got everything right with that one. I don’t know much about the PRC, but perhaps it is a short action 6.5-06? If it gets factory support like the Creedmoor did, it might go far...
John