Modern Gunsmithing by Howe has a rundown of the work involved. Don't recall offhand which volume it is in.
John
Volume II, a chapter written by on of the Armory guys who developed the Hornet. Woody, perhaps? Coincidentally I just re-read it the other night, but already the name escapes me.
I had an M2 converted to a single shot .22 K-Hornet, but whoever did the conversion designed his firing pin wrong and I couldn't fire more than 20 shots before the pin would break, necessitating me making a new one. Several different steel alloys were tried, as well as jockeying the dimensions and heat treating. Nothing worked so I gave up on it as a bad design, replaced the bolt with a rimfire one, and re-barreled to .22 long rifle.