I was having this same problem last weekend with my SD. This is the third time I've been to the range with it. The first time I went I didn't really have any issues. When I got home from the first trip I was looking over my gun and noticed that the extractor had moved about 1/8 of an inch forward. I contacted S&W and they sent me a shipping label to get it back to them so they could take a look. I wanted to go to the range again before I sent it back to see if there really was an issue. It was ejecting straight back, bouncing off my forehead and earmuffs every 3rd or 4th round. And the rest of the empties were just sort of falling out of the ejection port instead of flying out to the right. I'm not sure if the extractor was causing the issues but I will be sending the SD back to S&W in the next week so they can take a look.