Mossberg 835 magazine cap

[tha bugman]

The magazine cap on my 835 has apparently seized up for some reason....I cannot turn it with my hand at all.  Not really concerned about it now as season has started and I don't plan on taking the barrel off.  Any ideas as to why this may have occurred?

[Happy]

Not sure why it would seize up. Should be able to wrap a rag around it and free it up with channel locks

[tha bugman]

Not sure why it would seize up. Should be able to wrap a rag around it and free it up with channel locks

1 thought that I had was that it may be due to me shooting it in the cradle of the lead sled.  Mine is not adjustable, so the fore arm is barely in the cup of the rest.  maybe the recoil moving backward may have done it.  Hope I didn't damage anything.

[Happy]

The threads are pretty course on the magazine cap. I wouldn't think recoil would be enough to jam them but those 3.5's aren't for the faint of heart. I always shot off my shoulder just cause I wanted the recoil to go somewhere. Was it just hand tightened on?

[BoWhoop]

Before you go the channel lock route try rubber gloves or a piece of inner tube, and before that try to get a little bit of Break Free down in the threads. 

[tha bugman]

Update....don't know why but reached up with my bare hands and with very little effort it broke loose!  All is well again!!

[bamahunter]

I think they did a good job with that knurl design on bottom of mag cap and I've had a few times over my 24ish yrs of using my 835 that it appeared to sieze... I just hit the butt of stock against ground to try and slide barrel back a little and was about to loosen... Mossberg and their precision, aerospace grade, machining tolerances  

[longislandloco]

A trick I found from an old-timer older than me...........stand gun up on hard floor, push down on barrel and turn knob, sometimes just relieving a bit back pressure on the cap helps, if you have a very soft recoil pad, take it off.

[Old Gobbler]

A trick I found from an old-timer older than me...........stand gun up on hard floor, push down on barrel and turn knob, sometimes just relieving a bit back pressure on the cap helps, if you have a very soft recoil pad, take it off.

I do the same thing except.....I pop the gun on the floor lightly to simulate the recoil from a shell and twist the cap off, I can actually get a cap off by hand doing this that folks would have a hard time getting one off with pliers