My mother-in-law just gave me a bolt action, clip fed Mossberg from 1938. I was her dad's gun when he was a kid. I just looking for any info on the gun. I havent loaded the clip yet so I don't know how many it will hold. I figure this could be my quiet gun. My other .22 is a Rem. Nylon and its pretty loud. It has two tapped holes on the left side of the bolt, mid ways up. Are these for a scope mount? The trigger gaurd says- Rec. in Canada 1938 O.F. Mossberg U.S.A. Pat. DES. 110729 Barrel says- O.F. Mossberg & Sons inc New Haven, Conn U.S.A. 440s(b) 22lr PAT Any ideas what the 440s(b) means?