I can't vote because I would pass on both in favor of either a SP101 in .357 Magnum or a lighter and slightly smaller .38 Special.
Apparently, the poster is looking at a used Ruger SP101 in .38 special. Although I agree with you 100 percent, I still voted.
You could fire .38s in an SP101 every day for a lifetime and not wear it out. It just begs for the .357 and I really thought it was weird when they released it in .38 Special, 27 ounces.
However, the Rossi is a 24 ounce steel gun, so what's 3 ounces in the scheme of things?
I've owned six Rossi revolvers. Two of 'em were .22s and danged neat ones. I bought the second when the first one got stolen and I missed it so much. I kept one 3" M68 that is amazingly well finished and fitted and quite accurate. Other Rossis I've owned lacked the fit and finish of that gun, tooling marks under the hammer (looked rough cut and tossed together) such as that. This 68 was bought in 1981 and if it didn't have Rossi stamped on it, I'd swear it was a Smith 36. The other guns I owned were late 80s, early 90s vintage. They all shot well, though, but they were NOT Rugers. Good guns for the money at the time. I gave a hundred bucks brand new for that 68 in '81 and it's still shooting 2" 25 yard groups.
I love that little 511 Sportsman .22, shoot it nearly every range trip. Its accuracy amazes me, a little Kit gun in stainless, very handy little .22 trail gun with accuracy enough to take rabbits and squirrels at iron sight ranges with, though my Mk2 outshoots it of course. It'll group about 1.5" at 25 yards, the Ruger cheats, has a 2x LER scope on it.