Received much help from Cpt Link on design, methods to do the work, etc. This project started life as one of his designs, similar to the monocore Enfield577 recently put up viewtopic.php?f=10&t=112842 which was also motivation to get on the stick with this one. Originally was going to be a chopped barrel with a core perm attached to keep it 1 stamp. I kept hemming & hawing around & "what if I do this instead?" until I finally settled on a design. I'd say the design was inspired by Cpt Link, modified by me, and then tweaked by Cpt Link so it's probably 90/10 his/mine & is shared with permission.
It's a Green Mountain 10/22 bull barrel, blued steel. Midsouth had them on sale (maybe still do) for $100 shipped.
Tube is gr 9 Ti, 1" OD, .036 walls. That math works out to .928 ID to fit over a .920 core/barrel.
I'll post more details later tonight after work. So far, I have the materials & tools & have made a good fixture to hold the barrel for the machining operations. Chips start flying after work this evening. I only plan to work about an hour a day on this, so it will be a slow build, but will try to document it well for everyone.
Excuse the drawing - powerpoint is my CAD software so scale isn't perfect. But it's a good idea for what's happening. If you look at the pics of Enfield577's & then this drawing, you'll get it.
The end goal is to have a "sleeper" integrally suppressed 10/22. I want it to look like a nice 10/22 bull barrel rifle, but not easily recognized as different from a slightly customized 10/22T - at least not until it shoots.
I once plunged a solid carbide center-cutting end mill directly into a high-speed steel tap that had broken off in an aluminum crank case. That carbide ate that HSS tap like butter. It was amazing.
