The MOSSBERG Model 46B was made between the years 1938 and 1945.
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.
The Mossberg 46B(b) was only made in 1947-1949, when the model number changed. Excellent target rifle.
The Model 46B was made 1938-1946. The 46B(a) was 1946-1947, the 46B(b) was 1947-1949. These are EXCELLENT target rifles.
Made between 1938 and 1946. In 1947 the model was changed to 46B(a)
Model number changed to 46B(a) after that year
There is a Mossberg 46B, and a 46B(b), but no B46B. The 46B is a bolt action .22 Target rifle, made 1938-1946, the 46B(b) was a later model, made 1947-49. I have a few of these- they are excellent target rifles.There IS a Mossberg Collector's Society, and a good history book of Mossberg guns (More Gun for the Money). Some info on different Mossberg 22's can be found by running a Google search for epix mossberg models.
50-200 or so
Manufactured for Montgomery Wards, this is a Mossberg Model 46B. The 46B was made from 1938-1946. Most date from before 1942 (WW 2, Mossberg was making training rifles for US Navy). The 46B is an excellent rifle.
Cross reference to a Mossberg Model 46B. The Mossbergs were great target rifles. For some more info on Mossberg 22s, Google search for "Epix Mossberg Models".
50-150 or so
I believe this rifle was made by Mossberg and is the Mossberg 46B. Do a search for photos of the 46B Mossberg to see if it is a match. If so, try Havlin Sales & Service as they may have a replacement trigger guard.