Fix bayonets!!! :biggrin2:
How long were you out in the cold? Is it possible you went from a warm environment (vehicle) into the cold and then had condensation freeze inside the gun? Maybe next time you need to...uhh...pour some warm liquid on the gun. Ahem. :embarassed: Look up "Frozen Chosin."
If you put some tape on the bolt face, or on the base of a spent shell or snap cap, you should be able to tell if the firing pin is working properly now.
I'm no gunsmith. I do have a Mossberg 500. I have had it go click twice. both times I was aiming at a turkey at close range. I figured out the the adrenaline had the better of me and I was pulling the pump rearward. It seems just enough so that the shell is no longer seated properly? Not sure if that is what happened with you but now I just make sure to put a bit of forward pressure on the pump. No problems since.
I just field stripped my 930,unless you took the firing pin out there is no way you could mess it up,If you removed the trigger group assembly you should be able to tell if it has enough hammer spring tension when you cock the hammer.In the winter time too much lube is worse than no lube.
Push in on the back of the firing pin with something so it will go all the way in and make sure the point is protruding thru the breech face,The only lube I use is a little on the bolt assembly slide rails.
I would use something like degreaser or brake cleaner and spray the bolt assembly and firing pin hole,then wipe it clean.then lightly lube the slide rail guides on the bolt assembly and reassemble
Took the SPX to the range today. Along with a sample of 4 different types of shell.
All 4 shells fired, but 3 of them took two attempts. The primer strikes also appeared rather light on the shells.
What brand of ammo where you using when you had this problem?
In any case, I polished the chamber to see if the issue clears up. Just have not had the opportunity to get back to the trap field since. I'm thinking of getting a polishing wheel for my power drill (don't have a Dremel) to polish it up even more, but I don't want to mess it up, either.
I figured I would update this thread, I know there have been a couple threads about SPX's lately. Over the weekend I stopped by the range really quick to test fire a M&P 9, and took along the 930 SPX. It was overcast, but sweatshirt weather, about 50°, so well above freezing.
This time around not only did the shotgun fail to fire on the first strike for several of the 12 rounds I shot, it turned into a single shot shotgun. I got 3 stovepipes and 9 FTEs, without a single firing sequence going correctly. This was with Federal target loads, which I have probably fired a couple hundred through the shotgun without issue previously.
So, today I shot off an e-mail to Mossberg's CS explaining the issue, so I suppose that I will see what happens when they respond and will update accordingly.
Bummer. I hope they treat you right.