From the lack of responses on their personal opinions or experiences with a Fabbri doesn't seem like a lot of people on this board own one. Of course they only make a few guns a year so that cuts the odds way down.
I've seen 1 guy here that hunts with one.
I've only looked inside 1.
Starting with the best materials in the world.
Vacuum arm melted steel for the barrels as an example.
And then running an optimized design. Geometry's, axis', radii, clearances, on the metal side,
and then optimizing the manufacturing processes,
and then covering all that up with Rizzini quality finishing processes, Purdy quality stock work,
and Bank note engraving.
you get a Fabbri.
The dependability for high volume is kind of a three legged stool of material, design, and processing.