Are those case necks staying in the cylinder, or going down the barrel with the bullet?
If so, the bullet is going down the barrel way outside the specs. /ubbthreads/images/graemlins/smiliesmack.gif (And creating some dangerous pressure spikes.)
If it's just cutting the necks off & leaving them in the cylinder, then it shouldn't be doing that either.
I've not shot those revolvers, but, I'd expect the cases to come out as I had loaded them... /ubbthreads/images/graemlins/confused1.gif