You’d have to drill the second hole in the front and back spaced to what you need it for your application, and it might require counter sinking a hole or two, three, ... then the screw lengths should be checked to make sure they don’t stick too far down into the action.
BTW make sure - very sure you drill your holes before cutting, use a mill and make sure it’s perfectly parrellel, and that the holes are perfectly centered. Doing it by eye doesn’t work - if you end up a couple thousands out of line you will end up bending or putting anglular pressure on your scope tube, or pointing the scope to the side ... given you should be using a single hole that already exists, there is more of a chance of bending it.
