I note it was the first time shooting that revolver. I had that also. As I dont know what your technique is like, please forgive if you did everything I say already.
1) Make sure you butter the front of the chambers with a good amount of lube, it softens the fouling and helps the thing keep going almost indefinitely.
2) Before you shoot at all, take the cylinder off and butter the arbor pin (is that the right name for the pin the cylinder rotates around?) with lube. If you have it clean, and dont use a lot of lube on the chambers, the fouling gets in there and binds the cylinder.
3) As above, don't set the chamber to barrel gap tight.