Doing a Bartlein barrel job in .308 for a friend's FNH action that came off one of the police sniper rigs. Believe the thread is 1-16 but not sure about the cone portion of the barrel or will extractor cut will need to be made. Already have the barrel set up an ready to thread. I have also rough bored the chamber and re-zeroed the bore where bullet will contact the rifling for final chambering. Any prints out there for this action barrel combo?