DF
Considering when the rifle was assembled I bet it is a 1-10. In those days the 6 Rem had the fastest twist which was either 9.5 or 9.75.
I don’t think Douglas made anything faster than 10.



“Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away”.
Antoine de Saint-Exupery. Posted by Brad.