I expect the majority of 9.3 barrels have a 1:14 twist while some have 1:12. If I was ordering a barrel today I'd specify a 1:10, which tends to fly in the face of common wisdom, which recommends the minimum amount of twist necessary to stabilize a given bullet. My logic is that the fast twist ensures that any bullet I'm likely to encounter will stabilize, regardless of weight, construction, or design, and the the high rotational velocity reduces the precession time of the bullet after impact. Since the bullet is in yaw for a shorter period of time, bullet expansion is uniform rather than askew, the heal of a solid will not squash, and penetration in either case is enhanced. The disadvantage of a very fast twist is that thin jacketed bullets (unlikely in a 9.3) can grenade, and cast bullets must be loaded to very low velocities (1200 fps) to prevent them from stripping badly.