This is a very old thread but since we are reviving things around here I thought I would tell you about my XDs45 that I bought on 3/18/16. The bottom line first is that I really like it and plan to keep it. I had several failure to return to battery (FTRTB) during the first 200 rounds. Sent it back to Springfield Armory for a fix. They said they recut the slide and test fired. I could not see any evidence of the recut. Back to the range. I still had a few FTRTB with Winchester 230 gr and Federal Champion 230 gr. I have tried to make sure to not limp wrist. Now here is the interesting part. Every time I have a FTRTB with light off center strike and no fire it is at least 40 to 50 rounds after I get to the range. Even firing single handed weak side doesn't cause a FTRTB before the first 40 rounds. That is why I consider it reliable enough to carry.
One person suggested that it could be a lubrication problem. After each range trip I have thoroughly cleaned the gun including the striker and channel which was left dry. I have also removed the extractor and cleaned that area and upon reassembly left it dry. The FTRTB seems to be caused by the extractor being too tight on the rim of the round. A slight press on the back of the extractor will cause the slide to go into full battery. After it returned from SA I cleaned it thoroughly and used the Froglube treatment. The next time I go to the range I will re-lube it after 30 rounds and see if that helps. Any suggestions you folks might have would be appreciated. 493 rounds shot so far.