Just downloaded Hornady 4DOF and was putting in my rifle specs, got to sight height over bore and realized I needed the measurement from bore centerline to top of pic rail. Action is an Impact, chambered in 6.5CM. any way to get this measurement without removing scope? Also, scope mount has 20 MOA built in, and is an MPA 1.125 X 34. There is probably a bonehead easy way to do this and I am missing it. Thanks for any input!!