I have a vh 16 ga. that is doing that, we had it to a local gunsmith and though it had been repaired. unfortunately it has not. I'm amazed it has not blown up in either my dad's face or mine since it has happened multiple times. It also has some other issues too, one is that the safety spring was broken, we robbed one out of one of other parkers ( my son wanted to shoot it for the annual pheasant hunt. we thought the gun was ok to shot at that time, after replacing the spring we found out different) and two after disassembly we found that the pin that puts the safety back to safe after gun is opened was missing, or is it a opinion that parker guns have? I guess from reading this post its best this gun finds a good smith that know parkers well and the sears. also thanks for the post on how to disassemble the parker.