Hi Patrice,
I am a bit confused. In the photo example you indicate that the rail should not extend beyond the action. Then you say the rail can stick out .270". Which do you recommend?
In my build, I cut the rail back until I could put a .060 feeler gauge between the rail and the fore end tube. The rail has a lug that prevents forward movement under recoil. Is this enough clearance?
Best regards, B