I had a god awful jam the other day after shooting close to 500 rds through my xd's. I was on my last magazine before my time was up on the range and after firing, the round didnt eject and of course another round tried to chamber...I pushed the unchambered round down into the magazine and ejected the magazine. The slide closed and then I was unable to open it, even one of the range officers couldnt get it open and the guide rod was sticking out about a 1/4inch or so...the slide wouldnt budge. I got it home and used a brass hammer to knock the guide rod back in place and then I was able to open the slide and I disassembled the XD (this is a tactical version .40) I had to use pliers to pull the round out and after examing it I noticed that actual cartridge had a crack in it which is what cause it to jam...I'm assuming it cracked after it was fired and the extra expansion locked in into the barrel. This was a Wolf round that did it and I also noticed the inside of the gun was extremely dirty..almost sludgy, which I'm sure was from the wolf ammo. I also used Hydrashoks, Winchester and Double Taps that day and they all worked fine and I could definately tell a difference in accuracy with them and the Wolf...Wolf was not nearly as accurate. Anyway, its all back to normal now..at least as far as I can tell...I guess I won't know until I shoot it again. I am a little concerned about the guide rod sticking out like it was...Anyone know if that will affect anything? It Don's guide rod with a 16lb spring. here is a pic of my guns also.