After visiting this thread for several days, I culled my field notes and, FWIW, this is what I had recorded for animals that I measured:
4x4 (western Colorado): 24"
5x5 (southern New Mexico): 24"
5x5 (north-central Idaho): 26"
6x5 (southern New Mexico): 26"
6x6 " " " : 27"
6x6s (western Colorado): 28", 28", 28", 28", 30" (the latter the largest-bodied elk that has been taken on the ranch that I have hunted for the last 15 years)
6x7 (western Colorado, 360 B&C): 28"
7x7 (central New Mexico 370+ B&C): 28"
I did not kill all of these, but measured all of them in the field prior to field dressing.
