Yes, there are different grades of Uberti, and maybe you got some new old stock.
I've had both makes and would choose Uberti as those I've had and been around have just been better.
That said,I admit I have an old brass frame '58 Rem by Pietta that I bought cheap and works fine with my target grade loads. Just so happens the cylinder throats, bore and timing are all correct. This is the first Pietta I've had that works this good, but I knew what to look for.