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Posted: 7/5/2018 2:57:04 PM EDT
[#1]
A mossberg 500.
No, seriously, I kid. Have you taken the bolt assembly apart and checked to make sure the firing pin moves freely? Maybe some gunk or debris preventing correct operation. Is the gun new? |
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Posted: 7/5/2018 7:45:53 PM EDT
[#2]
Sounds like it's not locking into battery give it a cleaning and inspect the barrel hood and locking lug on the bolt. Post some pics
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Posted: 7/5/2018 11:45:48 PM EDT
[#3]
I’d inspect the bolt and make sure the firing pin moves freely and is not broken. Also check the staked ejector hasn’t moved and preventing the bolt from moving freely and going completely into battery.
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Posted: 7/6/2018 1:55:44 AM EDT
[#4]
I will try to check the pin. But I wouldn't think it would be the pin, as it seems to fire for the first time after being assembled.
It is a used gun I picked up. |
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Posted: 7/6/2018 2:08:10 AM EDT
[#5]
Quote HistoryQuoted:
Sounds like it's not locking into battery give it a cleaning and inspect the barrel hood and locking lug on the bolt. Post some pics |
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Posted: 7/6/2018 8:49:22 AM EDT
[#6]
Quote HistoryQuoted:
Pics of what specifically Exterior shot of assembled gun looking at loading port both action open and action closed. Disassemble the gun Pics of ejector through ejection port and through loading port. Pics of rails in receiver and shell stops. Pics of the action bars from side and top. Pics of bolt assembled from each side, top, bottom face and tail. Disassemble the bolt, pics of bolt components. Inspect the firing pin channel for debris. Pics of trigger group from each side and top. |
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Posted: 7/11/2018 10:51:22 PM EDT
[#7]
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Posted: 7/11/2018 10:52:02 PM EDT
[#8]
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Posted: 7/11/2018 10:52:51 PM EDT
[#9]
Sorry it took me a few days to get the time to break it down. Yes I know its dirty inside, I'll try cleaning that but I think something is broken I don't think its just a dirt issue.
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Posted: 7/12/2018 6:34:14 AM EDT
[#10]
Is the action opening far enough to cycle shell out of the mag tube and into the chamber?
With the gun empty, pull the trigger and watch to see if the hammer falls. If it does then cycle the action and see if the hammer is cocking. If the hammer does cock after pulling the trigger then keep the trigger pulled back and cycle the action and watch to see if the hammer will cock, or is the hammer following the bolt forward. Let us know what happens with these tests. |
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Posted: 7/12/2018 11:54:39 AM EDT
[#11]
Quote HistoryQuoted:
Is the action opening far enough to cycle shell out of the mag tube and into the chamber? With the gun empty, pull the trigger and watch to see if the hammer falls. If it does then cycle the action and see if the hammer is cocking. If the hammer does cock after pulling the trigger then keep the trigger pulled back and cycle the action and watch to see if the hammer will cock, or is the hammer following the bolt forward. Let us know what happens with these tests. OP I'm stumped. Everything looks good in the pics. I would say clean the trigger group as it could be grunge in the sear area preventing it from resetting or a weak springs, but.....it also did the same thing with another trigger group. With that information I would have asked exactly what GunCat said. With only one extra question. Are you getting light strikes on the primers. Let us know. |
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Posted: 7/12/2018 9:51:42 PM EDT
[#12]
Quote HistoryQuoted:
Is the action opening far enough to cycle shell out of the mag tube and into the chamber? With the gun empty, pull the trigger and watch to see if the hammer falls. If it does then cycle the action and see if the hammer is cocking. If the hammer does cock after pulling the trigger then keep the trigger pulled back and cycle the action and watch to see if the hammer will cock, or is the hammer following the bolt forward. Let us know what happens with these tests. I don't know how you'd watch the hammer, isn't the receiver blocking the view ? But I hear absolutely no noise, the hammer couldn't be doing anything. Also it will not lock up, it can be pumped freely back and forth. |
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Posted: 7/12/2018 10:34:44 PM EDT
[#13]
Quote HistoryQuoted: Also it will not lock up, it can be pumped freely back and forth. If the forearm moves forward on the tube the action may not completely close which will keep the action lock from engaging - and the trigger disconnector will not allow the trigger to release the sear |
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Posted: 7/13/2018 12:29:18 AM EDT
[#14]
Quote HistoryQuoted: Make sure the fore end nut is tight (and the forearm completely seated on the fore end tube) If the forearm moves forward on the tube the action may not completely close which will keep the action lock from engaging - and the trigger disconnector will not allow the trigger to release the sear |
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Posted: 7/13/2018 12:34:47 AM EDT
[#15]
Ok I'm really confused.
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Posted: 7/13/2018 1:30:06 AM EDT
[#16]
The gun now dry fires properly. It is extremely tight to pump though. I think I may have damaged the forearm rack tube. But it seems to work other than being tight.
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Posted: 7/13/2018 1:58:07 AM EDT
[#17]
Check Your ejector spring (on inside of the receiver) that is isn't bent too far outside especially at the back...
That may be the cause of your binding as there is a track in the bolt and if the ejector spring is outside of it, it binds. |
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Posted: 7/13/2018 7:44:27 AM EDT
[#18]
Also check the action bars for damage in the slots that engage the bolt slide.
I'd now like to see pics of the magazine tube from top, each side and bottom. And a shot down the inside of the tube. This is a tricky shot, white paper in the loading port with bright light facing it will light up the inside of the tube. Depending on your camera, turning the flash off may help. Also pics of both forearm assemblies with the same perspectives, include the action bars. but also pics of the nut that holds the forearm to the slide tube from the end and top. Label them so we know which is the original one and which is the alternate one. |
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Posted: 8/7/2018 12:08:46 AM EDT
[#19]
Ddi you make any recent changes, such as replacing the pump forearm? My brother swapped his wood out for a Blackhawk stock and forearm, and the forearm fit almost too snugly. The gun would lock up, but would not fire. After doing some fitting, the forearm slid on another 1/16" and the gun would fire.
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Posted: 8/10/2018 5:30:16 PM EDT
[#20]
Quote HistoryQuoted:
Ddi you make any recent changes, such as replacing the pump forearm? My brother swapped his wood out for a Blackhawk stock and forearm, and the forearm fit almost too snugly. The gun would lock up, but would not fire. After doing some fitting, the forearm slid on another 1/16" and the gun would fire. IIRC- As I was fitting the forend, it became VERY hard to cycle the action until I found the sweet spot of removing just enough material from the forend. It really sounds like something is preventing the bolt from locking up properly. Like others said, make sure the barrel is FULLY seated and the mag tube nut is properly screwed on. |
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