I have heard (for crying out loud don't test this on your own) that Uberti decided to test their top break Schofeld copy, just in case someone dropped a +P Ruger load into one.
They found it was unharmed at 30,000 psi. At 60,000 psi, the gun was clearly getting bent, but still held shut. That testing convinced them it would take any sane .45 Colt load, so they went ahead and made it in the standard .45 Colt, not bothering with the short .45 Schofeld case like S&W did.
Again, this info is what I heard, and I can't confirm it. The fact though, that Uberti makes their Schofeld replica in .45 Colt, makes it believable.
Apparently the top latch works fine, when made from modern steels.
If someone knows if this is true I'd love to hear the source fo the info. Again, don't shoot Ruger loads in a top break!
I myself would like to have that navy Arms replica in .44 Russian. That spur on the triggerguard just plain looks very cool