The Army used a 10" twist from the Krag through the .30-03 to the .30-06. It worked fine with 150 grain 1906 and M2 Spitzers, 165 grain M2 AP, 173 grain M1 boattails, and the original 1892/1903 220 grain roundnose.
There is a legend that once upon a time, a worker picked up the wrong sine bar and set a rifling machine for an 11" twist. Barrels from that machine were consistently more accurate than barrels off of other rifling machines. But when they checked the equipment and found what had caused it, they changed it back to 10". Official specification, don'cha know. But the 11" twist came back into the limelight for M14/M1A NM rifles.