Ok. If all lines up with the straight edge then the stock is straight and you have a bedding issue. The action or recoil lug is hitting somewhere and causing it to cock to one side.

Factory lug or aftermarket lug? The aftermarket one(like a SSS or northlander) tend to be longer and more square at the bottom and the stock needs to be inletted deeper and wider in the lug area.

Could also be the mag box bottoming out ?