Girl hunter my spelling may not be perfect but if my memory serves me correctly the 250 AI can be had with two different shoulder angles. Do some research and see for yourself.
As for the creed having tighter saami specs I doubt it saami specs set out a max and minimal spec for all cartridges.
Loaded to the same pressure and same tight spec chamber there would be stuff all in it between a .257 and .264. My spelling may not be acceptable to girl hunter but surely .007 of an inch ain't gonna make a great deal of difference in the real world. Both will kill things. My personal 25 is capable of 0.90 groups in my old hands and kills stuff as far as I can shoot. I think 7 thousands of an in is clutching at straws. Both ore fine cartridges for thier intended purpose.
A 250 Ackley Improved is 40 degree shoulder, period.
