So what are you actually trying to accomplish here? Big game ( deer, bear) hunting where shotguns only allowed? So called “bear defense”? A toy? Just curiosity?
For general game hunting hunting a pump or autoloader would likely be more accurate, more consistent, cheaper and easily scoped. Practical range is short, target is large, tack driving accuracy not necessary.
Bear defense? Where? When? I’ve lived, worked and hunted in areas heavily populated by both black and grizzly bears for most of my life. I know of only two people who had to defend themselves from a close range charging bear, both grizzlies and both successfully won the encounter with the rifle they were moose hunting with, no harm to the hunters except soiled underwear and some nightmares. People who work in the bush daily in the north like timber cruisers, prospectors, guides, foresters, etc often carry a short barrelled 12 gauge when working in bear country, I’ve never known of one that needed it in a life threatening situation, they look at it like wearing a seat belt, another layer of protection. And at bad breath distances in an attack situation regulation means squat.
A toy I can see, but an expensive one.
Curiosity can be expensive.