Definitely no reason not to go 8 or 8.5, except if you can't get one and the 9 twist is in your hand.
Hello Rick,
Thank you for contacting Berger Bullets. You should be okay with the use of the 1:9” twist barrel. Our tests have indicated that you can go as slow as a 1:9.3” to maintain marginal stability with this bullet and that is the reason for our confidence with this bullet for you. Please do not hesitate to get back with any of us with the Berger Tech. Team if we can be of further assistance.
Kind Regards,
Bob Blaine
Technical Specialist
Berger Bullets Technical Support Team
[email protected]