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I wouldn't shoot slugs through a full choked gun.
Savages/Stevens, made between 1949-70 were all stamped with a Savage Date Code Letter somewhere in the bottom of the bbl or action.
1949 = "A", 1950 = "B", etc - up to an "X" for 1970 ( "I" & "O" were skipped)
They were introduced in 1934, though, and you're going to be S.O.L. finding a born-on date if it wasn't made between the above dates, since Savage/Stevens has historically been secretive about their production records.
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