So I've already had 300 rounds through my JCP and it's been great so far. Then I took it out today and only shot 50 rounds through it. It was blazer brass which I've had great results with but today it was jam crazy. It was all failure to feed issues. The one thing that was different that I noticed right away was that there was A LOT of play in the magazine and magazine well. When the mag was full in the gun it was really loose and moving all over the place. It wasn't like this before so now I'm confused. But every time the gun would try to chamber a round the mag sat too low and moved around so I was getting all nose up jams. So what's going on? Because I don't really know.