Moose - I had serious leading between cylinder and barrel, bullets keyholing. Took it to the dealer and he sent it to the factory. When I got it back - about 2 weeks - on about the third shot a case seperated and blew the loading gate open. Tried another brand of ammunition and all went well - for 5 or 6 shots. Then the same thing happened. The factory replaced it with a new one, no charges, even for shipping. BTW, I never sent in the warranty on the gun and when I first returned the gun it was well beyond the warranty period of one year. I had just never gotten around to using the gun before that.
Get yours back to Heritage - they don't seem to dispute any problems.