Here is the table "RATES OF TWIST" from page 29 of the 2008 CZ catalog.

We have discovered that there are CZ rifles in 9.3x62mm chambering that have 1:14" twist rather than the advertised 1:9.5" twist.

CIP standard twist for 9.3x62 is 360mm or 14.17" .

Anybody else found any variations from this list of twists? Anyway, CZ has not held strictly to CIP specs on twist.
Note all the 1:10" big bores:

I have Kreiger 9.3 barrels with 12 twist..For the 500 Jeff 1 in 20...I imagine it would take a life time to determine "best" twist...then change one small factor and all bets are off..I just tell Kreiger the intended catridge and they run it in their whiz-bang computer to determine twist...never disappointed!