I have a couple odd duck Rossi's...
My 1st, a pre safety engraved saddle ring carbine, in 38 / 357, & that gun may have been someone's safe queen before I bought it, as I think it looked unfired, it was reasonably smooth, & got even better with use, & is plenty accurate...
My 2nd, I also bought used, a safety model, stainless & brass 45 Colt rifle... the gun had a defective firing pin from the factory, which I had my local retired smith buddy, make me a new firing pin, & remove the hammer block safety as well... that gun was reasonably smooth, & was likely unfired because of the defective firing pin, since I've been shooting it, it's slicked up a lot, & is accurate enough for me...
... my buddy has a newer 38 / 37, that needed repair, from the get go... looked like they put a 44 extractor in the gun instead of a 38 / 357...
my experience shows the pre-safety guns as very shootable, the 1st couple of years of guns they made with the safeties, seemed to have the most issues, & modern newest manufacture, seem to have gotten most of the bugs out again...