The most important thing 25CM seems to do is fit and feed in an AR action from standard mags with a notable second going to twisting at appropriate rates to expand modern mono bullets. Yes I realize the first point is now mostly irrelevant to Canadians.
AR15 will not fit a 25 Creedmoor. The AR10 would fit, along with 25 Souper and 308 Win, 250 Savage etc
Do monolithic hunting bullets need a faster rate of twist to expand?