I'm a SASS member (Life Member) from way back. My first Cowboy Battery was a Uberti Schofield, a Uberti Cattleman, a Uberti 1866, and Colt Custom Shop black powder frame Single Action Army, and a Rossi M92 carbine (all in 44-40).
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Since then, I've added at last a dozen Uberti arms to my battery and never had a problem with any except for one: a Henry rifle in 45 Colt. The 45 Colt rim is about half the size of the 44-40 and extraction problems occur when I'm trying to cycle the action rapidly. OTOH: my 45 Colt 1873 Uberti has performed flawlessly for close to 20 years now.
Frankly, in hindsight, I wish I'd bought both of those rifles in 44-40 just because of the 44-40s history... but 45 was all the dealer had (or could get) at the time.
The toggle action in the Henry, 66s, 73s is indeed nowhere near as strong as in later rifles, but it's smooth as butter, and works like a charm... with reasonable loads. It worked wonders back in the day and IMO its still viable today, even if it is antiquated.
I never heard of soft screws in Uberti handguns (other manufacturers to be sure but never Uberti) and I've been pretty involved with Uberti guns for a long time.
The biggest complaint I ever heard about them was that the tolerances on their first Schofield models were so tight that the number of black powder rounds you could fire through them before they bound up from lack of cleaning wouldn't get you through a SASS match. I read this in a 1995? Shooting Times magazine and the author was Mike Venturino (aka Iron Duke). Regardless, Mr Venturino allowed as how that problem had been resolved by Uberti before he had completed writing the article.
My first Schofield was a Uberti 44-40 with a 3 digit serial number. It IS close tolerance, but will shoot BP throughout a match.
I also have a brace of 45 Colt Uberti Schofields which became my main match guns for years. Once or twice (out of God alone knows how many unloading cycles) the extraction/ejection star on one of the 45s would slip "around" the extra small 45 rims and that takes about 15-20 seconds to remedy - critical if you're unloading and reloading on the clock - but again, the problem is in the design go the 45 Colt round (which is why there were NO rifles designed for the 45 Colt until the 1
990s ... 19, not 1890s. The 45 Colt lever rifle is less than 30 years old.
Probably my all time favorite, most useful, Single Action revolver is my Uberti made Cimarron New Thunderer. The action is the best of any out of the box SA I've ever experienced and to me the birds head grip (with the S&W hump) is pure perfection.
When I carry a SA in the desert, it's my only choice these days.
I have a few other Uberti made shooters as well and with the exception of the extraction problem on the Henry rifle, they have served me superbly for many years.
But my stuff is OLD, like me. I've no idea what Uberti quality is like since being acquired by Beretta. I would hope that it got even better than it was when i was in the buying mode.