I sent an email to CZ-USA and asked for a brief rundown on there twist rates and this is the reply I received.
.17 Mach 2 - 1:9
.17 HMR - 1:9
.22LR - 1:16
.22 WMR - 1:16
.17 Rem - 1:9
.204 Ruger - 1:12
.22 Hornet - 1:16
.221 Fireball - 1:12
.222 Rem - 1:14
.223 Rem - 1:12 Unless it has the HS Precision stock it is then 1:9
.22-250 - 1:14
.243 - 1:10
6.5x55 - 1:8.6
.270 Win - 1:10
.270 wsm - 1:10
I hope this helps
Thank You
Tammy
CZ-USA
