[Scorch]

Get a smallish (1/16"?) drill and one the size of the minor diameter and another of the major diameter of the screw. Set up the rifle in a vise. Put masking tape on the stock where you are going to mount the studs. Find the center of the stock looking along the stock from one end. Put the small drill bit into a hand-held variable speed drill motor. and drill in 3/8"-1/2" perpendicular to the stock line with the small drill bit. Take the drill bit out of the drill and put it into the hole you drilled and check for squareness and centerline. With the small drill you can correct angle, location, and squareness to the stock line by just working the drill motor in the direction you need to correct. Drill to about 3/4"-1" depth. Once you have the squareness and centerline established with the small drill, you can move up to the drill that matches the minor diameter of the stud threads. Drill deeper than needed by about 1/8"-1/4" so you don't run into the bottom of the hole when screwing in the stud. Don't forget to relieve the mouth of the hole to just larger than the shank diameter of the stud so you do't break out wood when you screw in the stud. Put a punch or an Allen wrench through the stud hole and screw it in.