When are we going to see a 25 Creedmoor? For the 25 fans. It would basically be a .250 Savage AI................which would be pretty cool.
I can't see any advantage to a .257" bore cartridge built on the Creedmoor format, as there aren't any long, VLD, .257" bullets that could take advantage of the shorter Creedmoor case in a short action.
The better short action .257" bore cartridge is, in my mind, the proven performer 25 Souper.