Your H&R will bring between what you'd paid and $125, and they're a good example of the common pocket revolver of the era.
Shoot loads in the Black Powder pressure range, and you'll be fine.
Parts aren't all 'that' plentiful - but they are out there - and installation can be interesting, since the action's held by pins.
I've got the variants of them, and the 'faded' plating can be helped considerably by hand-polishing with 'Simichrome'.
Vaya,
Scouts Out!