Just how old is it? Early 97's had a short feed ramp that caused exactly the same problem you're having. I believe they changed it in 2014, but I'm not sure. Manuf. date should be a 2 digit number just in front of the chamber cutout on the slide. You can get a replacement barrel with the longer ramp, but it would still need to be fitted to your gun. If it's just a range toy, the better (cheaper) option might just be find ammo that feeds reliably. Good luck.
Dave