Eric.....I used to use my vertiacal mill as a drill press to do those holes, not very speedy. After watching Jim Chambers do
it with a hand drill, I changed my ways. I now do it with an electric drill, hand held. I will hold the rifle in a vise, horizontal, upright. I put a vertical pencil mark on the stock where I want the pin to be. I take a caliper and measure the barrel at that point, and lock it. I then place a small parallel clamp across the top flat of the barrel and the bottom of the stock. Then, by holding the point of the caliper up against the top jaw of the clamp with the bottom jaw being down
along the stock. This tells me exactly where the bottom of the barrel is. I then take a scribe and push a small hole into
the stock just below that bottom jaw of the caliper. I then take that hand drill, with the proper size bit, and get the drill
as close to horizontal as possible and merely drill the hole. It works great and is a fast way to do it...........Don