RG, if you'll go to
http://benchrest.com/douglas/ you can watch a video by Douglas bbls that explains barrel making from start to finish using the button rifling method. And at
http://www.border-barrels.com/articles/bmart.htm there is an article that explains the process using 3 methods of rifling. There is a very good book titled "Barrels and Actions" by Harold Hoffman that goes into great detail and actually tells you how to make a barrel from bar stock steel. I'd like to try it sometime but it just isn't cost effective with all the barrel blanks on the market. A barrel blank isn't really blank. It's already drilled, reamed and rifled. There are several good sources for blanks. I like Douglas bbls and use them as the standard in my shop. I have put together some very accurate rifles using some very inexpensive bbl blanks from Gun Parts Corporation. Most of these are E.R Shaw or at least that's what they told me. Another good reference for barrel work is Gunsmithing by Roy Dunlap. The books I mentioned are both available from Brownells
www.brownells.com. George