Yup, that's it.

Please, the best thing is to take it to a gunsmith and let them unload it and check it for you to make sure the barrels are safe. All you need is one spark caused by trying to get the old black powder out and it is definitely not worth trying to do it yourself. It may be loaded with a ball, shot or something else that could spark if scraped and boom! Some things are well worth having a gunsmith do the job.

How are things between you and your mother-in-law?

Mother in-law is gone now... sigh... nice lady.

I am definitely not familiar with the inherited shotgun, since receiving only last week. Side plate was stamped with "Parker" which lead me here, and now I know that Parker Brothers and Parker are not the same.

A TC 12 gauge muzzle loader , 3 band 1861 Springfield replica, Hawken replica, many Colt/Remington replica pistols and serving on a 10 lb cannon crew have been a few life experiences.

My kit has all the tools needed to pull the load and I ordered a TC CO2 unloading kit.

Thanks for the info on proofing marks. I will be checking out what my wall hanger really is after getting it in a safe state.

P.S. I noticed the forearm shim looks like wood vice brass/steel. Some body dropped a part somewhere...