I've got a Jap barreled action that someone tried to rechamber. The case is squared off at the shoulder, barrel is no good-maybe. Mabye it can be rechambered for 338-06 or shorteded for the WSM 308. My REAL QUESTION is What scope mount BASE do you use for the Jap action???? Question 2.) If anyone has a scoped Jap, is the safety knob hard to operate????