Mr. Jeffery: Thank you sir!
I logged most of my hours and figure I'm sitting around 750hrs for the pair. A good chunk of that of course was "figuring". Making drawings, making jigs/fixtures and tooling which wouldn't need to be done again. But there's no way around it, its a very labour intensive process! (but extreeeeeemely satisfying!)
The equipment I have access to is pretty tight. I work to a few tenths on my lathe(weiler CNC) every day making fancy shafts for pulp and paper mills. The milling machine I did a lot of this on(Microcut retrofit "programmable DRO") is kind of a toy. But like anything, measure 3 times, cut twice and there's your size.
I made most of the parts for these size on size and then hand worked them till they just fit ever so sweetly. The result is a silky smooth gun that doesn't stick or bind at all but also doesn't rattle or wiggle. With the action open for instance, You can probably wiggle the end of the lever .005-.010"? You cant fit a piece of paper anywhere around the breach block. The extractor doesn't rattle or jiggle(action closed, empty chamber) and the hammer has about .002" side play.
How does it shoot? "Oh Mylanta!" I can't claim to be a shotgun guru(A competitive trap guy would want to make adjustments I'm sure). But shooting clays in the back field, its balanced beautifully, handles and points very well, comes up nice and is very comfortable to shoot! I wasn't sure about the crescent butt plate for a shotty, but it kind of "scoops" your shoulder into position and it's only being a .410 leaves you with some forgiveness....
Now I'm all bent on getting this rifle finished up and put together so I can start working up a load! I'd like to shoot a sheep in the mountains with it this fall...