I polished the sand casted thimbles. This was done to two opposing sides and then the section between them.  Used a needle file for this process.    

The thimbles were inletted into the stock and drilled for 1/16" pins.

Here is the rear thimble.  The slot was drilled out and then I laid the thimble on top of the area for final placement. I will have to inlet the rear thimble when I return. 

Rear thimble is now inletted.

Here are a couple photos of the rifle hanging on the wall at this stage.