You can call Remington at 1-800-243-9700 and go thru the menu selection. One of the menu options is to request information on your Remington based off the serial number. You read off your serial number and the guy looks up in the database the year the gun was made and what the orginial barrel was for that gun.
Impossible to answer without the serial number.
1920
1920
1930's.
1913
1917
1916
1911
1912
Manufactured 1909
Manufactured 1914
1948