Between the bolt & the chamber in the locked up position-NONE.
lcjones
Your Western Field model SB-312 double barrel shotgun was made for Montgomery Wards(western field) by the savage arms company.The Savage model 540D shotgun is the same shotgun as yours.If you go to the savage web site they may have more info on this model?
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.
The western field model 15A was made by mossberg.There model designator was the mossberg model 83.
Western Field model m5500 20 ga was manufactured by Savage Arms
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 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
Your western field model m550a was made by mossberg.There model number is the mossberg model 500.
Western Field 25XNH-472 was made by Noble. A model 50 Western Field 25XNH-472 is a Noble model 50
Should be a version of the Marlin 336. Wards sold the Marlin under the Western Field brand name through the 1960's until they switched to Mossberg in 1971.I've found that the Western Field Model 33A was made by Noble.
Montgomery Ward and company made my Western Field model sb-100b.
your western field was made by mossberg.There model number for cross reference would be the mossberg model 341.