winchester brought out a john wayne rifle in i seem to remember the mid to late 80's with an engraved picture on the receiver , what was the calibre of this rifle ,and what did the Duke actually use in rio bravo , hoping you guys are a lot more cluey than i am regards dave

It was a Mod '94 32/40 Winchester
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the rifle in the movies was a ' 92 Winchester 44/40cal

The '94 is a 'beefier' rifle, made to handle stronger cartridges. The '92 was mostly in pistol calibers.