I've been in contact with three of what I would call the "newer" 357 in mod 94,one had a cross bolt, one had a tang safety, and other was newer that both, I have personaly been involved in getting the first two to work with great success, and the third is owned by a friend that is supposed to arrived today, and bring it to get fixed.
As for the problems with the feeding..... first, make sure (this is for reloaders) make sure the crimp is done well and is completely smooth, second, on the inside end of the lever there is a small tab that is supposed to hold the next round in the tube mag while the first is fed to the barrel, these later modles will occasionaly let a round slip past ending up under the rap you can't close the action and it takes upward of half hour to get it out.
To fix this, get to the that short tab, extend it very very slightly I did it to much the first time and couldn't get any rounds out!! anyway extent it only slightly and that will fix that problem
The second problem that I've seen with the same guns has been the rounds stovepiping or jaming from what appears to be the shorter rounds not feeding through the design, I had two of these to compare, one that did it and the other that did not, in the end I found that the one that was jaming had a weaker spring that lifted the ramp from which the round was slid into the chamber. I took the spring out over bent it a small amount with my fingers and put it back it, never had a jam since. We use this rifles in situations that do get dangerous at time, and fast shooting occurs regularly, (at close range) and we've not had a problem. Anyway, probably way more than anyone wanted to hear, but we went through some stress thinking we owned guns that were no good to our cause, but it with only a little quicking they are flawless.
Anyone want more details P message me.