Here are a couple rugers. Top one, new to me. Built by Schwartz (Wayne I believe) built in early 80's . I topped it with an old balvar. Came with a ton of correspondence between builder and owner (Gibbs.) Last owner sold it to me as a 30-30 but the paperwork appears to reference another caliber. Bore is .310. 2 breach seaters. Cool custom stock with removable comb for loading with the straight seater. I believe that was done by a peter shuttleworth, it is in papers. 
Second is a Barry Darr build, action serial number is 3 digit. Was built on 1971. It was a personal gun of his, am the 4th owner behind a Bob A. (All I know, lives in iowa) then Virgil Davis. It is 32-40 with cam type seater. Topped with a unertl programmer 20x
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Hard to even see the seam in the woodwork
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Paperwork
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Even referencing the ASSRA, last paragraph
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I'm always amazed at how guys can splice a stock together and get the lines almost invisible! But that's on permanent additions, not a removable piece! I'm beyond amazed that the top Ruger can have a removable piece that's has no parting line showing when the top of the stock is in place! 
Truly amazing craftsmanship!