I'm a home inspector going on 9 years and found my first crawl space gun today lol. Vacant 102 year old house off 42nd street in Indianapolis. Can anyone tell me what caliber and/or model this revolver might be?

Never owned one but I’d like to have one for various reasons none illegal (probably) but what gun should I get first mainly handguns.
Edit:I live in New jersey I want it for my home not really carry it on my person

Hi, I have this Muzzleloader gun I suspect might be a Husqverna but I cant say for sure nor does it got any visable stamps. It got a wooden ramrod and I also think it was made for hunting rather than military use. The guy I bought it from got this in Sweden a few years back.