New member needing help identifying a rifle

[woodsmanmsd]

This .54 caliber rifle has been in my family for at least 50 years and was found in an old house in the Shenandoah Valley.

Obviously of Belgian origin but I can't find anything that matches it, some are similar but nothing exact. Quite a few markings on the underside of the barrel that starts octagonal and goes to round. Thanks in advance for your help.

 

[Ole Miss]

Folks like @johan_steele and @ucvrelics will be able to assist you in your search for answers
Good luck
Regards
David

 

[johan_steele]

If you can give a better picture of the front/top barrel band we might get a better idea. But at first blush (on my phone) it looks like a "Frankenmusket" made from assorted parts. Assorted parts were easily available and often cobbled together to create inexpensive shotguns. Up into the 60's & 70's when the buckskinner & reenactor hobby seemed to really get going I think items like this were fairly common.