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A buddy of mine purchased a 682 and it misfired a 3-4 times every round, due to a light primer strike. Started on the top barrel and moved to the bottom. Has sent the gun to Coles twice, no satisfaction. The first time they replaced the springs, no help at all. Second time they disabled the ejectors, saying that using the ejectors caused the gun to not fully open and thus not fully cock. ??? Has anyone had a similar problem and know of a cure?
 

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spring and firing pin. You may want to have him try another shell some shells (Federal) have harder primers.
 

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I had exactly the same problem with misfires due to light primer strikes so I tried switching from the cheap Remington's (Walmart 4 paks) to the cheap Winchester's (Walmart 4 paks)...

The problem disappeared.......

Food for thought...

regards
 

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Some common causes are weak hammer springs, damaged firing pin, dirt not allowing the firing pin to travel forward enough, shells with the primers set too deep. These are things that can be fixed without the aid of a gunsmith. If they do not work, then take it to someone who understands the gun.

I am puzzled about the statement involving the ejectors not allowing the gun to fully cock. The hammers will be cocked and held back by the sear or they will be uncocked. It is an all or nothing system. I believed the days of exposed hammers and a half cock position are gone.

Pat Ireland
 

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Interesting problem.........my son shoots a kreighoff 32 which did a similar thing, only on the bottom barrel, only with new AA winchesters. It is a tube set and it did it with every gauge.

Our problem was head space. It seems the rim of the shell being too thin combined with the excessive headspace caused light strikes. Took it to Kreighoff and they wanted to reset the barrels and reblue the gun, took it to another Kreighoff trained gunsmith and he said there was no headspace problem, took it to a third Kreighoff gunsmith and he wanted to just do an annual and swore that would fix it, right after Krieghoff had done one......time for a little redneck engineering.

Took some colored fingernail polish and built up the recess where the shell rims rest in the chamber. Hasn't had a misfire or light strike in about 50k shells since. Have to use colored polish so you can tell when you need to recoat. Heck of a lot cheaper than any of the offered professional solutions and almost no down time or exhorbitant charges for shipping a gun to and from a gunsmith.

Your's could be anyone of the problems mentioned above........but if the nail polish works, who cares what anyone else thinks? The idea of the problem only happening on the top barrel to start with made me think the gun was not being opened completely, but that's hard to do with the bottom barrel.

Not to be arguementative, but I have had several 680 series shotguns apart, and none have had half cock notches in the hammers, and yes, I do know what a half cock notch is and how to recognize one. Maybe all of mine have been different from those mentioned above. They do vary from almost new to about 18 years old, I have lots of 680 series shotguns, I would think I would have seen this before.

Seeing how it has been to Cole's, It probably is not a drage issue with a dirty action.

Given the work done on this gun....I'd check the seating depth on the primers that were light struck, and if they are okay, I'd try the nail polish thing. The worst it could do is not work and have to be removed with nail polish remover or scraped out and kill 30 minutes.
 

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It could be the hair spring that moves the cocking dogs and cocking rods back when cocked, remove barrells with hammers cocked, hold action vertical with but down and look at the cocking rods, if the right hand one is lower than the left then the hair spring has lost some of its tension. What happens in this case is that when you fire the gun the hammer has to push the cocking dog and rod back thus reducing the energy available to strike the firing pin.

They are a bit tricky to fit and you must note that the groove in the cocking dog goes back the same way it came out, otherwise you will bend your new spring

Argus Tuft
 

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Jim,
I do not question your knowlege of Beretta 680's, but I believe Mr. Argus Tuft may have the correct answer. That was what was wrong with mine. Me, Burton, and the gang at Shade Tree Gunshop fixed mine.
Good luck!
Your friend,
Bruce Kenley
 

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I’ve had two with my 687 unsingle since I bought it in May of 2008. Both were new Remington Nitro 27 shells. I’m not sure if it was the gun or the shells used because I never had it happen with any of my reloads.

Dale
 

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Put a piece of tape on the base a hull, and close the gun. If it closes easily you might have the headspace problem mentioned previously.

You can also remove the barrels and insert a new shell, then check with a straightedge.

Clymer makes a reamer for redoing, but of course the recess has to be welded up to be recut.

HM
 

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I had this problem with 682X, I started giving each pin hole a shot of rem oil before tournaments and never had another light hit for the next 75000 rounds that I owned the gun. I would take the pins out once a year and clean them and the pin holes .
 
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