5.56: Fragmentation or Expansion?

[MegademiC]

It's not the twist being slow. M193 fragments equally inconsistently out of 14, 12, and 7 twist. Except 14 twist in subzero temperatures can tumble.

This.
No actual twist rate will stabilize a bullet in flesh.
Yaw makes a difference and is barrel dependent, but I think thats more of an m855 thing.