Got mine this week.
Some notes:
It's built like a tank. Solid AF.
I had gotten 100 rnds of 410 slugs (my range only allows slugs). Federal.
Not a single ONE would chamber half way passed the brass. Had to use pliers to back them out.
Went to crappy tire (CONVENIENCE ONLY), they had two boxes of Winchester super X 410 slugs. ($3 per round!)
Those fit in fine. But you REALLY had to push them in on the last 0.1 mm HARD to get the cylinder to rotate in. Tight tolerances.
Out of 10, had 3 misfires (non-fires, and no refires cycling through). Examining the strikes on those 3 misfires compared to the other 7, the primer was hit half as deep.
Maybe it was the ammo, dunno.
This was in single action mode.
Methinks the firing pin spring is a little too strong. Maybe just needs more of a workout.
Can't use the 100 rnds of Federal: they won't fit. Can't return it.