Well, I took mine to the range this morning. I only went through one box (50 rounds) of Fiocchi 140 gr FMJ 357 ammo. (I did another 50 38's through my 2019 Cobra).
With the exception of a dud round (the very FIRST one I tried) no problems. The other 49 went bang as expected, and I was able to hit my own target.
No problems with the cylinder rotating or anything. Only 50 rounds, but it's a start.
Now, if you think having a dud round on the very first time you drop the hammer on a new, expensive gun, won't give you a sick feeling in the pit of your stomach...you're tougher than I am. Two additional hits also failed to fire it, so into the "dud can" it went. The next one went BANG and all was well with the world.