Have any of you guys tryed to soth the hole for the crossbolt and see if it touches the bolt at the moment of fire?

Even a shotgun will flex a bit in the action when fired, a DR will open up even more. In larger calibers it can open enough to affect regulation, this is if no other third lock is aplied offcourse.

And the usuall way to get a gun off face is to open and close it, not to shoot it, and the crossbolt doesent help there does it? Not mention carrying it over the back broken.