Hey Dinny: that really looks good and I am working to pattern my (older) M70 project into something similar to yours.
Mine is a pre-war M70 that came with a HART bull barrel that HART re-contoured to a pre-war sporter configuration and now I'm trying to stock it. Have had major headaches trying to find a stock but agreed with the gunsmith to take the large and heavy target stock that came with it, as it is the only stock we know of that fits the action, and re-contour that to mimick the pre-war sporter stock configuration.
The large target stock that came with it is a laminate that the gunsmith says has nice grain to it but it is in a brown/black color scheme - I would like to wash that out and make it a grey/black color scheme to better match the old blued action and stainless barrel; it might work.........