Okey doke, weekend update for anyone interested.
Got the tang screw drilled and screwed into the trigger plate, inlet the nosecap, inlet the entry pipe and narrowed down the forearm quite a bit. I'm learning to pace myself, which is good for my back as well as giving me time to think about the next step, to hopefully avoid stupid mistakes.
Someone told me no one can build a perfect rifle. The only people with perfect rifles are those who know how to fix and cover up mistakes very well. Not sure how good I am at covering them up yet but I'm sure good at making them.
First lesson: inletting brass to wood looks easy. It's hard, and even when it feels like it's going in great, one little slip and you have a mistake to fix. My butt plate looks pretty good if I do say so myself, but the toe plate meets the wood evenly only 60% of the edge. I'm going to have to do some backfill to fix that.
Micro planing, rasping and then chiseling the front wood for the nose cap went well and I felt like it looked pretty excellent. But then, moving the stock around to work on other areas, that thin little piece of wood projecting from the front hit something and cracked at the joint to the rest of the stock. After throwing up and hoping I can find a way to make it work anyway, I continued work and hit it again, knocking it off. This is the biggest mistake so far.
Now I'm trying to decide whether to put some 1/16 pins through that thin wood into the stock to reinforce it or just epoxy the $#*! out of it and hope it holds. The nosecap snaps on to the end of the barrel in a very snug fit which seems fortuitous. During church this morning I thought about cutting back the barrel by two inches and redoing the nosecap, but tennons are already installed, sight dovetails cut so that's a no go. I thought about getting a new 31-34" bbl to replace the one I have (Bobby Hoyt lives a couple miles away), but not wild about the additional expenditure. So for now I'm thinking of finding a way to make the nosecap work on the existing stock, even if that means gluing in a piece of maple as a patch.
Next lesson: center punch BIG divots in the steel you're planning to drill. I put punch dents in the tang and trigger and used a drill press to line them up. The drill still slipped from the spot assigned and both holes are off center in the metal. By widening the tang hole and counter sinking it liberally I have it so it doesn't show as a glaring error, but anyone who knows these rifles will notice it immediately. Sucks, but I can think of no fix for this except for replacing the breech plug or even the barrel, which I also considered (see above). I've got it so it works and doesn't look too bad, my only worry being that big screw down through the stock might interfere with something in the lock. I haven't inlet that yet so we'll see. Could be exciting.
I tried to take the entry pipe really slow and intentionally after the above mistakes because I know that's one of the first things rifle critics check. It's in, and looks good though the excess wood around it is not removed yet. The only problem is the ramrod will not go in. Not on a bet. I sanded it some and rounded the tip, still no go. I'm going to ha to do something with the ramrod channel and still thinking about it, but the ramrod is already just over 1/4" and is bound to break eventually.
As Mike Brooks points out, there is a LOT of wood on the stocks TVM sells in their kits. I'm saving shavings and sawdust for the inevitable repairs. I started shaping the forestock to get a better feel for how the nosecap was to fit and have almost totally exposed the ramrod channel. I'm probably going to sink the pipes a little into that channel to make sure the ramrod slides in and out easily. The plan for the moment is to round the top of the stock to the lower 1/3 of the barrel, but haven't gotten that far. Also haven't touched the lock inlet or side panels, stock shape etc.
Anyway, to people thinking of doing a build from a kit, I think I can now confirm that the TVM kit is excellent in that a lot of the super hards stuff is already done for you. That may limit your choices but it also saves you a lot of work and trial by error--mostly error--learning.
I'm sticking with this to the end and doing my best to make it not just a fun rifle to shoot, but as pretty as I can. I already know it will be full of mistakes, so it will never be a $6000 special on the board here, but it will definitely serve to give me a better understanding of these glorious old machines that dominated our "conflict resolution" efforts for so long.
Thanks for all previous comments and suggestions--all are read and taken to heart. Feel free to suggest, critique or just bloviate.
Jack