Welcome to the Bersa Firearms Forum epeemonger !!
+1Welcome! I'm no expert on Thunders, but sounds like a mag problem. Does it happen with any magazine you use, or are you just using one mag?
I had the same problem with one mag new out of the box. Go onto you tube. Type in" bersa 380 mag repair". Lots of very good video clips, tips and pointers.If you send it back to bersa you may wait weeks before you see it again. If your handy with tools it takes no time at all. Good luck.Took my Bersa Thunder with the gold trim out to the range yesterday and enjoyed shooting it. It is relatively accurate, and a hoot to shoot, at least until I get down to the next to last shot, which invariably hangs up, misfeeding and stovepiping. I have tried pretty much everything that I can do, keeping the magazined loaded to season the springs, thoroughly cleaning and lubing the pistol, polishing the guide ramp. Nothing seems to help. And what is annoying is that fact that it is only the sixth or fifth round in a magazine of seven that hangs up. If I load six instead of seven, I get the same problem with the next-to-last round. Otherwise it is a great little firearm.