It is rifled, the 45 and 410 share barrel, why would it be smooth? 45colt out of smooth bore is far worse imo than rifled shot.
Rossi and Taurus are associated, it's a cheapo single shot judge
It would be fun, looks like a better grip than my Super Commanche-another Latin American cheapo Judge. And with it's 10in barrel the shot is decent up to about 10yds, the 45 in mine is a waste, 3-4in groups at 7yds, plus the sights suck, again this is info on another long-barreled single shot pistol.
I had a matched pair Rossi rifle, 12ga/22wmr, it functioned fine and was fun, good quality materials, not high end finish or so but you get what you pay for.
They do have a double barrel 45/410 11inch barrel pistol, it's a Leinad, formerly Cobray Arms "Deringer" They also have a 5shot pepperbox which seems pretty cool too.
Personally I guess you can tell I like these cheap "fun" guns, but that's all they are.
As for firing/handling characteristics, recoil is fun, not too bad, I like to hold it one handed like a cowboy or two handed like a long gun, my gf tried holding it two handed like a pistol and the recoil left her an interesting scar are her forehead...it was hilarious. just hold it firmly, some of the three inch shells get stuck in mine, keep your leatherman with you