Some reloading manuals have tables in the reference section regarding rate of twist.
My lastest Sierra manual lists it as 1~10. But I've found that they are not ALWAYS right. Anomolies do exist, and often show up where one would least expect.
Best to check it oneself to be sure...
"There are things that are known and things that are unknown... In between are the doors!"
"Life is a gift, Freedom is a responsibility!" - unknown