This is all based off a .278 link, if you add more or take away when you fit your barrel it's going to change the timing of the two, the Barrel has to travel further.
what I am looking for is where it is at; before I start the trigger work, if you don't have a point of reference, what do you do, re cut the recess forward, deepen it, change disco length, all I am saying is it gives me a starting point.