My Mossberg 810 a 30-06 will fire, but about every other shot or so, the firing pin will only dent the primer on the round in the chamber. if i reload the same round and shot again, it will go off. I have cleaned the bolt and receiver, but problem remains.
Check the firing pin protrusion. It sounds like there is a shortening of the firing pin that is causing the light hits. Any competent gunsmith can check this for you, and I highly recommend the services of a gunsmith for this kind of work instead of DIY gunsmithing as it requires special tooling for the measurement and it is part of the firing mechanism.
If you're getting a good dent, it's the ammo, not the gun. The good dent is all you hired the firing pin and spring to do. They did their job....don't blame them for the screwed up part time workers.
SOURCE: I have an old Mossberg Model 188ke 410 shotgun the
It sound like the firing pin spring has become weak. The simple way to fix it is to replace it, but if you are a handy man, you can remove it and re set it. The down side to this is that it will not last as long as a new part because it has already been weakened (a sort of metal fatigue). I have a similar problem with a very old Anshutz rifle. But sourcing the part is next to impossible. A Gunsmith could make a new spring.
SOURCE: I have a mossberg mod 352 KB with a broken firing
Go to gunparts.com online, they have schematics for every gun ever made and parts to boot. They sell to the public, certain items of course. Check them out.
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