Old 12-28-2008, 09:50 PM   #1
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misfires on the 500...

Anyone have this problem and if so what can be done about it?

It doesn't seem that the firing pin travels that far, unless it travels alot further than I think when the hammer strikes it home.
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Old 12-28-2008, 11:16 PM   #2
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I have never had this problem. Check your firing pin depth when you pull the trigger, unloaded of course. also, what kind of ammo is it? maybe it is just bad ammo.
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Old 12-29-2008, 05:34 AM   #3
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Quote:      
Check your firing pin depth when you pull the trigger
I haven't shot it yet... I was just told this.
how do you check the depth of the firing pin?
I saw how a guy pull the trigger while releasing the safety... does that hold the hammer
down to keep the pin past the hole in the bolt body?

Last edited by chucksniper; 12-29-2008 at 05:40 AM.
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Old 12-29-2008, 05:40 AM   #4
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Quote:       Originally Posted by chucksniper View Post
I haven't shot it yet... I was just told this.

So do you have a problem or not?? Light or no strikes can be caused by a number of issues. If you do have a problem we can try to help but if you've no problem fireing the gun then there isn't an issue, is there?
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Old 12-29-2008, 05:43 AM   #5
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number of issues

what are the issues?
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Old 12-29-2008, 06:01 AM   #6
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Quote:       Originally Posted by chucksniper View Post
I haven't shot it yet... I was just told this.
how do you check the depth of the firing pin?
I saw how a guy pull the trigger while releasing the safety... does that hold the hammer
down to keep the pin past the hole in the bolt body?
I believe that the 500 has an inertial firing pin like many other firearms so to check it, you need to remove the bolt assembly (someone will correct me, if I'm wrong, I'm pretty sure) and push the fireing pin forward by applying pressure against the back of it with some type of tool/screwdriver etc. That will give you the maximum travel available.

Issues which can affect firing pin travel are: damaged firing pin, dirty gunked up firing pin, damaged firing pin spring, hammer problems. Poor headspacing can also result in light strikes as can a hard primer in the ammo.
So If you experience light strikes, you try different ammo, clean & inspect the firing pin/bolt assembly & if nothing obvious, take it to a professional to fix.
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Old 12-29-2008, 06:10 AM   #7
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everything checks out ok....

I pushed the pin all the way in to the back of the bolt...
and it protrudes way past the hole.

I take it that the hammer pushes the pin this far.
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Old 12-29-2008, 06:20 AM   #8
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go fire it and get back to us.
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Old 12-29-2008, 06:29 AM   #9
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I know this guy see....

And he talks too much.. "Cool, you bought a mossberg, the only thing
I heard about them is once in awhile they have misfires" And I sometimes I listen too much.
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Old 12-29-2008, 06:33 AM   #10
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i betcha a nickle it works just fine.
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Old 12-29-2008, 10:53 PM   #11
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Quote:       Originally Posted by billy View Post
i betcha a nickle it works just fine.
No bet, ‘cause it sounds like operator error to me.

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Old 12-30-2008, 01:17 AM   #12
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Quote:       Originally Posted by chucksniper View Post
And he talks too much.. "Cool, you bought a mossberg, the only thing
I heard about them is once in awhile they have misfires" And I sometimes I listen too much.
Ok, well, go shoot about 500 rounds out of it and tell us how many missfires you had then tell your friend. I have probably put about 1000 through 3 different mossbergs in 12 and 20 guage and I have never had a single missfire. I have had a few cartriges get stuck because of bad ammo but with a little muscle in the slide, they ejected just fine.
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Old 12-30-2008, 01:23 AM   #13
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It is an Inertia firing pin system in the Mossberg 500...very reliable as long as it is kept clean like any other gun...
SHoot the devil out of it !!
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Old 02-18-2009, 02:59 PM   #14
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I've had a couple of misfires from my 500. Turns out it was the ammo after we ran it through some other guns. It was the Federal 100 packs. Don't buy them any more. Had 5 defective shells out of 100.
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Old 06-05-2010, 06:39 PM   #15
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Never had a bad ammo or misfire episode with my 18" tactical Mossy 12 ga. I shoot Winchester shells.
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Old 06-05-2010, 07:20 PM   #16
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Mmmm,

are you still under warranty?
If so do nothing and get in contact with Mossberg.

This should not happen.

If not under warranty then take it to a gunsmith.

Do it yourself repairs and explorations sometimes cause more harm than good.
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Old 06-06-2010, 02:34 AM   #17
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Quote:       Originally Posted by chucksniper View Post
Anyone have this problem and if so what can be done about it?

It doesn't seem that the firing pin travels that far, unless it travels alot further than I think when the hammer strikes it home.
I have seen this happen when people "short stroke" the pump action. The action does not get all the way back into battery, and the firing pin does not reach the primer. The only people I have seen do this are "newbies" and those with arms too short for the gun. It may be an ammo issue, but check to see if you are actually slamming the bolt home on your pump stroke.
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Old 07-20-2010, 12:41 AM   #18
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I had some misfires from my 500 one time, when it was almost brand new. Worried me, and embarased me at the same time. I was skeet shooting with my family. Looked at the shells, they had been struck, with no ignition. Ran the shells through a different gun and the same thing happened. It was a bulk box of federals and later on I found a shell that had been bent and warped. Since I have probably put close to 1,000 rounds through with no problem.
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Old 07-20-2010, 03:02 AM   #19
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Quote:       Originally Posted by dman24 View Post
I had some misfires from my 500 one time, when it was almost brand new. Worried me, and embarased me at the same time. I was skeet shooting with my family. Looked at the shells, they had been struck, with no ignition. Ran the shells through a different gun and the same thing happened. It was a bulk box of federals and later on I found a shell that had been bent and warped. Since I have probably put close to 1,000 rounds through with no problem.
As a mossberg 500 fan, I'd like to reword your first sentence. It should read "I had some misfires in my 500 one time....." It wasn't from your 500, just the cheapies used in it.
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Old 07-21-2010, 12:32 AM   #20
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Sorry, no misfires at all.

I use Federal and Winchester Wally World ammo and it goes bang EVERY time.

I do clean it. Run a boresnake through it whenever I take it out and break it down after 200 rounds
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