I actually did thread an old 10/22 barrel. Once you learn the basic principles of threading its not that hard. Just remember to take light cuts, oil and free cut often, check your set up for speed and TPI, and most importantly, DONT CATCH ON A HALF NUT! (dobbs should know what that means)
Had it not been for the ODT, i wouldn't have scooped up my P2000 for the low price of $500! And that was after a trade fell through and i offered a cash price. That was over a year ago and i still carry it every day.