Denton Dog, thanks for the tip and the link to that thread. That is exactly the issues I am having. The extractor is grabbing the case out of the barrel just fine, but ejecting the spent case is the problem. Frequently they hang up along with the next cartridge out of the mag or they stovepipe in the ejection window or hang up like the pic in the first post in that thread. I will give bending the ejector rod a whirl and see if that cures the problem before calling S&W. I did notice that when it does eject the spent case successfully, about half the time it throws the spent case forwards like it's bouncing off the ejection port side or something.