SOMADA 8 Inch Floating Shelf Brackets, 4 Pack Invisible Heavy Duty Shelf Supports, Solid Steel Hardware Kit for Mounting Concealed Within Wooden Shelves or Mantle, Hidden Brackets for Blind Shelf.

usually you're right I don't have to be dead center but i am using these brackets and they are about 2 inches wide by and i have 4 screws that I want to hit the stud so it feels like its cutting it close. Worried ill be a bit off and it hits the edge of the stud and damage it or smth.