Any Mossberg Model 42, 43 and/or 44 owners?

[Broadsword]

I've been cleaning up my gun cabinet and ran across these two rim fire magazines. Doing a little looking online they appear to be seven round magazines from a Mossberg model 42, 43 or 44 rifle. Knowing they guy I got these from I'd say they were for some kind of target rifle possibly military. Does anyone have an idea? I don't have the rifle for them so I'll probably end up listing them for sale but I'd like to know what they are for sure first. Any help would be appreciated.
Broadsword

PS. Any help with how to convince my wife that I need to buy a new rifle because I have these two magazines and 600 rounds of Eley ammo would be appreciated as well.