The question is difficult to answer without examining the pistol and ammunition in question.
9mm is, precisely, a caliber, not a cartridge. There are many, many different 9mm cartridges.
Some 9mm cartridges are known by several names, even though they have the same dimensions.
Some pistols have reputations for being able to fire several types of 9mm ammunition, even though they were designed to fire just one type.
The .380 pistol cartridge is also known as the 9mm corto, 9mm kurtz, 9x17, 9mm Browning, 9mm short and 9mm Browning Court.
There is also the possibility your pistol has a chamber which was manufactured at the far end of the allowable tolerances.
The first, and most easy thing to check, is to determine what cartridge designation is stamped on your pistol (have someone else read it if you must), and make sure the cartridges used are the same designation as the cartridges indicated on the pistol itself.
Some older or foreign pistols may not have a cartridge designation stamped on them.
Thank you for your response. I had no idea the pistols were stamped. This particular one was my most expensive and I was disappointed in the magazine release problem. But when the gun shot it was extremely accurate.
I have had a couple of eye operations and can now, with prescription lenses, read even small print. (Actually, had to have scar tissue scrapped off my retina...while awake.)
Didn’t the Spanish used to make a pistol that would shoot all the 9 mm rounds?
Pistola Modelo B comes to mind. Often called a “garbage gun” because it would shoot all the various 9mm, Largo, Kurz and other cartridges.