Cartridge Destruction

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Hi timeout. Try stripping the bolt down and clean everything good. It doesn't take much crap to cause a problem and semi autos do get some blow back in em. Not knocking 1187 but I've shot a lot through Remington and Beretta semi autos and you won't believe what you can find in the receiver. I've had shot get in triggers and dropped a trigger out of a Beretta for a guy on my squad and found a primer that backed out of a shell. It wouldn't let the bolt come back. A amazing amount of crap like powder debris can even get back in a locked breech gun. I guess a shotgun operating at lower pressure combined with fairly loose Chambers on almost all shotguns don't help the shells seal up well.

Thanks for the response. I'm going to give it a complete going over sometime this coming week. I'll post if I find anything that might contribute to this failure.

 

[dickn52]

Thanks for your reply. I would think the pop of a primer going off could be heard with muffs on but a firing pin click maybe not so much? My doubt would be if the firing of a primer would be enough to unlock the chamber. I haven't looked the gun over yet to analyze exactly how much force is required to unlock and move it rearward. I will be contacting Federal on Monday.

Reach up and manually pull the discharge lever to the rear. That is the force necessary to activate the ejection.

 

[243winxb]

The shell was not fully in the chamber at the time of firing. A primer firing, without ignition of the powder would not be heard.
The drop of the firing pin would be heard. Click, pause, bang.

The action may not have been fully closed. The disconnector did not keep the gun from firing, as it should.

This is my guess.

 

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Update. I disassembled the 11-87 yesterday and could find no evidence of a mechanical malfunction with the firearm. What I did find was the plastic shot column firmly stuck in the choke tube/barrel. That confirms that all the shot was dispersed from the muzzle end of the barrel. I'm certainly glad that I didn't clear the hull from behind the ejection port, reload and fire. I tried dry firing the shotgun with out the bolt carrier assembly being completely forward and it would not do so. I'm convinced that this was a hang fire malfunction caused by a faulty cartridge. I have not yet heard back from Federal Premium Cartridge Company. I fired some different cartridges from the gun today and it functioned flawlessly.