Near the breech.
i.have.a.j-reynolds-double barrel 16ga belguim rabbit ear shotgun seaking information
The patent date you are looking at does not indicate a year of manufacture. Stevens made many different models of double-barrel shotgun. Which model do you have? sales@countrygunsmith.net
That is the rear end of the barrel where the shell is inserted.
Not enough information
Check the frame and barrel
CHeck the barrel and receiver.
Have you tired the internet?
Impossible to answer without more information.
A shotgun barrel with a cylinder bore choke.
yes a rifled shotgun barrel or smooth shotgun barrel
1965 if it is an auto-5. There should be markings on barrel to indicate choke.