That gun is a Savage model 315
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.
i beleve mossberg did
The Western Field model 550C was manufactured by Mossberg for Montgomery Wards.
The Western Field 47 is a Mossberg model 45A and was manufactured in 1937 and 1938 only.
Your western field model 80A was made for Montgomery wards by the savage gun company.There model was the model 29.these model 29 savage,s were produced from 1929-1967.
Your western field model m766 was made by mossberg.The mossberg model 810B is the same firearm.
I belive it was mossberg? DEFINITELY!
Please add the model number to your description to get a correct answer to your question.