I know there have been similar threads in the past but at a quick glance I didn't find anything. Yesterday I set up some targets and was target shooting my px4 9mm. It had been about 2 or 3 weeks since I had done so. I do try to shoot as often as possible ... Anyway, I loaded up all of my magazines and went outside. The first magazine had no problems, worked as designed, as it always has. The second magazine, however, seemed to be sticking and not feeding the ammo to the top of the mag. I simply gave it a good smack, and it pops the next round flush where it should be. But when I chamber that next round, the same problem happens again. After emptying the magazine and reloading it, slapping it every few rounds along the way....it has the same problem. Does anyone have some advice for me to take care of this? I haven't taken it apart yet, because I have no experience doing that. I believe it should be very simple, but I wanted to get some input from the forum before I launched that project.

Thanks in advance