The toggle link action, as stated before, isn't a real strong design. It's not as strong as the Marlin, which isn't as strong as the '92 clones.
Uberti does list a .44 mag 1873 rifle, so they must have worked on the steel and one would think it's strong enough for that round. Surely their lawyers wouldn't let them sell an unsafe rifle.
That said, I wouldn't shoot a whole bunch of full power .44 mag ctgs in that gun. And, for sure, no reloads with heavy bullets. I would think factory loads and reloaded equivalents would be about all that gun should see.
For a .44 mag carbine, there are better options. One of the best is the Miroku Browning/Winchester '92 that was offered a few years back. I'd be looking for one of those used. Otherwise, I'd get a Marlin. An older one, not a new one.
IMHO,
DF
