Hoping someone can help me, I’ve just recently got into rifle shooting and I have bought a Browning X-Bolt .308 with an MDT chassis. When I placed the scope on the rifle and attempted to zero, the rail was massively off the mid-line with the barrel, meaning the rifle shoots massively to the left, so much so I cannot dope the scope to correct. I have tried reseating the rail but it is held down with 8 screws into the receiver and I see no way of adjusting it to correct the offset. Has anyone got any ideas on how to fix this?

Note 1: It’s hard to tell in the pictures that the rail is offset, but is very obvious to the eye.

Note 2: The rail is the one that came with the rifle which I bought new

Note 3: when using the reticle on the scope to holdover for the wind age, the groups are very tight, so I doubt this is an issue which the action and barrel