Agreed, speaking of old 760's, I cant make heads nor tails out of Remingtons serial number codes, does anyone know what year 314xxx may be for a 760?
I don't know of any charts that can help date a Remington by serial number. You used to be able to call them or go on their website and tell them your gun model and serial number, but there is no website now.
There is a chart for the date codes that are stamped on the barrel. On the left side of the barrel, near the receiver will be 2 or 3 letters stamped into the metal, old eyes like mine need a magnifying glass to see them.
Here is the date code chart:
Remington dates of Manufacture