the last model 1300 made in the U S were 2006.
your winchester model 1300 shotgun was made by winchester between the years 1995-2006.
By the serial number.
I can say that the Winchester model 1300 was made from 1978-1993.I hope this narrows your time frame a little.
it depends on the year, and condition,of the gun!
it first came out in 1984
I can say that Winchester made the model 1300 shotgun from 1978-1993.They also made the model 1300 Walnut field model from 1994-2006.You will have to contact Winchester directly to get the exact year of production for your shotgun,as these records are not available in the public domain.
The Hartford plant closed in 2006. There were parts and certain models that were "outsourced" beginning in 2002.
The last year of production for the Winchester model 61 was in 1962.They made 10,661 rifles that year.