We do a lot of these in our shop; two just last week, converting M1903A3 demils to .22lR. If you have a good lathe, you can buy the short piloted drill from Bbrownells and silver braze on an extension using the lathe for centering. You need to turn down the end of the drill to make a loose fitting tenon to fit a drilled hole in the extension, or vice versa. I say loose, because you need to leave several thousandths clearance for the solder to wick in. I use low temperature silver braze and it holds up well. I wet the cleaned inside of the bored-out barrel and the outside of the liner with Devcon Epoxy Steel and push in the liner from the breech end using a little cork to prevent epoxy getting into the muzzle end. It takes quite a bit of pressure, due to the viscosity of the epoxy - I hold the barrel in the headstock, and use the tailstock as a jack to push it in 3 or 4 inches at a time. Cutting the extractor groves at the chamber end f is usually the most ticklish part of the job, especially on the old single-shot drop-block actions (e.g. Martini Cadet). If I can help further, drop me a note, or call me at our shop, 352 567 9800 (Wednesday throuogh Saturday).

OlManDow
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