Yes, they are pretty sturdy. The Fiocchi 44s I had to experiment with were given to me by a friend who bought them to use in a Browning '92. After a few shots in the Browning, he decided to look for something else and turned the rest of the Fiocchis over to me. It's a cute little rifle, but that Browning was vicious with them. They aren't a lot of fun in a Model 29, either.
It would be interesting to know how fast they are going. I never chronographed them, either. Current name-brand U.S. 44M/240 factory loads are supposed to clock 1180, and when you put them in a 29, that is about what they feel like. The Fiocchis are probably going close to 1400.
If the OP is looking for something inexpensive, reasonably pleasant to shoot, and is not concerned with reloading, CCI Blazers are very accurate in my guns. It seems strange for inexpensive, aluminum-cased ammunition, but I can't think of any 44 factory loads that outshoot them.