The holes for the two tang screws are already drilled through the wood. In order to get the holes (countersunk) in the tang to align with the holes through the stock, I had to move the barrel back just a little in the channel. When checking that fit, be sure to stand the rifle on it's muzzle so that the tang can be lifted free of the inlet without jamming, and tearing out wood. Do not try to pry the tang out or you'll ruin Jim's tight inletting. I found that standing the rifle vertically helped the tang come free of its inlet.
Once you have the barrel bedded properly, and the holes aligned, you can pass a drill bit through the stock to mark the trigger plate. Then remove the plate, centre punch the marks you made, and drill with a tap drill. The rest is routine..