It sounds to me that you have a Stevens model 520,which would cross reference to the model 30 Western Field.The stevens model 520 should have a slight humpback in the receiver.The model 520 was made from 1912-1932,and was resurrected in World War II for a trench,riot shotgun due to all the tooling being present at the outbreak of the War.This is also the most made shotgun during the World war II years.some 20,000 were made for the U.S.Gov.
Your western field model m550a was made by mossberg.There model number is the mossberg model 500.
The western field (montgomery wards) model 72C was made by mossberg arms company.The mossberg model 472 is the same as a western field model 72C.
Your Western Field model 768 was made by mossberg for the Mongomery Wards company(Western Field).The mossberg model 800A is the same rifle as yours.
your western field was made by mossberg.There model number for cross reference would be the mossberg model 341.
Your Western Field model 46b was made for Montgomery Wards(Western Field) by the company Mossberg and Sons.The mossberg model 42 was made from 1935-1941 as the model 42,42A,42B,and model 42C.the western Field model 46b and the Mossberg model 42 are the same firearm.I hope that you find this informative.
western field is/was a mossberg company
Western Field 25XNH-472 was made by Noble. A model 50 Western Field 25XNH-472 is a Noble model 50
The western field model 15A was made by mossberg.There model designator was the mossberg model 83.
The western field model 472 was made by noble and listed as the noble model 50.
Montgomery Ward and company made my Western Field model sb-100b.
Your Western Field model M830 was made by the Mossberg and Sons firearms Company.It is the Mossberg model 340K which was made from 1958-1980.
your western Field model 770a was made for Montgomery Wards(western Field) by Mossberg.The Mossberg model 472 and your rifle are one and the same.These rifles were made between 1974-1976.