590A1 - Very Stiff Fore End (Not So With 590 Shockwave)

Can-down said:
Right on, maybe they did put the marine coating on a little to thick somewhere.... you should be able to see the wear points.

On a different note, if you like the shiny nickel plated shotgun look, the EGE Arms PA37's have been pretty cheap lately..... :)
The Ithaca 37 action is about as smooth as a pump gets!

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I think you nailed it. I'll bet the paint is thicker than phosphate finish, and even the parked guns need to break-in to get the gritty feeling out of the action. At least all my Mossbergs did when new. They slick up in short order though.

What's confusing me is the OP says it (the lock up) comes and goes, without rhyme or reason? If it were tight tolerances due to cerakote, I would think it would be consistently tight?
 
thegazelle said:
I honestly wonder if I got a lemon here. I remember when I took off the magazine tube cap yesterday, it was VERY stiff. After I reassembled the gun, I couldn't get it back on without tools - used a thick punch to put through the swivel stud and then tightened that way - there was no way I could hand tighten it even to the racheting point. It didn't go on crooked.

Today, when I tried to loosen it, it wouldn't loosen by hand. When I turned the swivel stud with the punch, it just loosened the swivel stud. So I took some locking pliers, wrapped a silicone glove around the cap and then loosened it that way. After reassembling everything again I looked at the cap - it goes down but doesn't seem to catch any of the threads and when it looks like it does, I couldn't hand tighten it, just like yesterday. So I used the silicone glove to wrap it cap, and then used the locking pliers to tighten again. Wasn't a lot of force with the locking pliers,

My 590 Shockwave wasn't like this, and obviously neither were my Supernovas.

I will just resign that I may not have to clean this thing. If for some reason the extremely stiff fore end problem doesn't get better, I may send it in so they can look at the cap threading issue as well.

Sure, I could be a weakling, but none of my other shotguns with magazine tube caps have this issue.
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Oh nooooo!!!?

There is no way, under any circumstance that you should need tools to disassemble or assemble a shotgun. Certainly not a Mossberg.

I wonder if you can compare the barrel of your Shockwave to the barrel of your marine. Take particular notice of where the barrel extractor cut out (chamber end) is in relation to the ring. Recently, Mossberg seems to have a problem soldering front sights on their barrels (posts here on CGN discusses it), and I'm curious if that same problem doesn't also carry over to the retaining ring which is also soldered on?

If you put the Shockwave barrel on the Marine, does the binding disappear?
 
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Painkillers said:
I think you nailed it. I'll bet the paint is thicker than phosphate finish, and even the parked guns need to break-in to get the gritty feeling out of the action. At least all my Mossbergs did when new. They slick up in short order though.

What's confusing me is the OP says it (the lock up) comes and goes, without rhyme or reason? If it were tight tolerances due to cerakote, I would think it would be consistently tight?
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This is very true. I have no scientific way to isolate when and where. It happened with Score slugs - about the 6th shot, then it didn't happen until about 10 minutes later, but to a much lesser degree. It happened once when I was cycling the snap caps (Amazon weighted one with the rubber "primers"), but then about 20 minutes ago I tried it again (after I used tools to tighten the magazine tube cap) and all six snap caps cycled fine. No feed issues or loading issues.

I did spend some time during a work meeting on Teams (mic was muted), racking that fore end like my life depended on it. At least I hope the mic was muted. I will find out tomorrow if I get a call with "your services are no longer required" verbiage...
 
Painkillers said:
Oh nooooo!!!?
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Nothing was defaced. I just put the punch through the existing swivel stud hole to gain some leverage when tightening it. It didn't require super human strength - the magazine cap just had no grip to hand tighten.

Why can't this thing be like my Supernovas or my 1301 or M4? Magazine end caps super easy to put on and hand tighten. Seems like all those had a better design than this thing...
 
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Painkillers said:
Oh nooooo!!!?

There is no way, under any circumstance that you should need tools to disassemble or assemble a shotgun. Certainly not a Mossberg.

I wonder if you can compare the barrel of your Shockwave to the barrel of your marine. Take particular notice of where the barrel extractor cut out (chamber end) is in relation to the ring. Recently, Mossberg seems to have a problem soldering front sights on their barrels (posts here on CGN discusses it), and I'm curious if that same problem doesn't also carry over to the retaining ring which is also soldered on?

If you put the Shockwave barrel on the Marine, does the binding disappear?
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I wish I could tell you. I sold the 590 Shockwave a couple of years ago.

Taking the cap off was a challenge for this 590 A1. Was very tight but was able to do it by hand. But then it never went back on without the punch helping to turn it. Now I cannot remove it without the locking pliers

Any idea who services Mossbergs in Canada? I hate sending guns in but if the action gets stuck on cycling I can have them look at that and the end cap thing.

Interestingly enough never had an issue with the very tight cycling when there was nothing in the gun, whether live rounds or snap caps
 
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I have a Mossberg 590A1 that I've put hundreds of rounds through without a hitch. Well almost, I bought some aluminum Winchester whitebox, at Walmart in the USA for a 3 gun match. Jammed it up like nothing I'd ever seen before. I had to "mortor" the rounds out by banging the butt on the ground while holding the foregrip with both hands. I never bought those shells again and have never had an issue since.
 
It’s entirely possible you got a lemon
My 590. 20 gauge has a front sight that was put on crooked at the factory
Any way to answer your question I think Wolverine is the mossburg warrenty repair canter for Canada
 
thegazelle said:
I wish I could tell you. I sold the 590 Shockwave a couple of years ago.

Taking the cap off was a challenge for this 590 A1. Was very tight but was able to do it by hand. But then it never went back on without the punch helping to turn it. Now I cannot remove it without the locking pliers

Any idea who services Mossbergs in Canada? I hate sending guns in but if the action gets stuck on cycling I can have them look at that and the end cap thing.

Interestingly enough never had an issue with the very tight cycling when there was nothing in the gun, whether live rounds or snap caps
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I don't sorry, but there are plenty of guys here who are shotgun guru's and are trustworthy. Where are you located? PM me if you want...I'm not a guru by any stretch but if you're close I'll happily pay it forward, as plenty here have helped me in the past.
 
Thanks everyone. The end cap thing is not a dealbreaker that I need to service it now. I just bought it last month, so lots of time to get service done on it - may as well run it regularly for a few months and see if the problems continue. If not, I can always just send it in just for the end cap - I can't imagine using locking pliers everytime I need to clean it. And members are correct - I have never had an endcap that I couldn't remove by hand. It wasn't even close to being challenging.
 
Painkillers said:
I don't sorry, but there are plenty of guys here who are shotgun guru's and are trustworthy. Where are you located? PM me if you want...I'm not a guru by any stretch but if you're close I'll happily pay it forward, as plenty here have helped me in the past.
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Thank you brother...PM sent.
 
I found the problem with why the end cap does not go on without tools!

Thank you to Painkillers for putting me on the right track.

The issue is with the magazine spring retaining piece (that C shaped thing). Once I took that out, the cap went on easily and I was able to hand tighten it from start all the way to ratcheting point.

Scary that that stupid little piece can cause the tube end to get bigger, resulting in the cap not going on without tools.

Wonder if I can just put the spring in and then turn the cap tighten it that way. That retainer piece is a royal pain in the butt. I like how Beretta's is a snap ring that just needs snap ring pliers.

I just put it back in (with just my two hands pressure) and voila, the cap doesn't go back on without tools.
 
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thegazelle said:
I found the problem with why the end cap does not go on without tools!

Thank you to Painkillers for putting me on the right track.

The issue is with the magazine spring retaining piece (that C shaped thing). Once I took that out, the cap went on easily and I was able to hand tighten it from start all the way to ratcheting point.

Scary that that stupid little piece can cause the tube end to get bigger, resulting in the cap not going on without tools.

Wonder if I can just put the spring in and then turn the cap tighten it that way. That retainer piece is a royal pain in the butt. I like how Beretta's is a snap ring that just needs snap ring pliers.

I just put it back in (with just my two hands pressure) and voila, the cap doesn't go back on without tools.
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De nada bro!
 
Now that I know what the issue was, I just did some cursory searches online and lo and behold, a few others have had the same issue. Looks like many people just throw out that retaining clip. And I can understand why - to have to slowly pry it out each time...if that thing warps, it may make the tube worse - I am just shocked that that thing can change the thickness/diameter of that end of the tube to the point where it affects the cap. I am not going to try to pinch that clip to change the form, as I am sure it will make it worse elsewhere.

I cannot help to think this has to be some QC issue. And I have to say also I have never had this issue on any of my Italian pump guns. At least I am relieved that I won't have to send this into Wolverine...at least not for this issue anyway. I may write Mossberg and maybe they can send me another clip, but who knows if it is the clip or my tube. It is too bad I don't have my Shockwave anymore, but even then who knows if it's the same parts (should be).

I get what that clip does and under pressure to keep the spring in. I thought about taking a thick punch and hammer and then hammering in that clip further down, but that only causes issues later with now having to put in something with a hook to pull it out. I have a propensity to make things more complicated so won't do it here.

The fact that it was a bear to unscrew initially out of the factory tells me the problem wasn't how I wedged it out with a flat head screwdriver, but was an issue with the tolerance either with the retaining clip, the end cap, or the magazine tube.
 
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Have you tried to work the action with the barrel removed? Do the action bars move freely? It sounds like it is binding on something. I would check to make sure that the action bars are straight and parallel. If one is bent or crooked it can rub on the receiver and cause friction or binding.
 
I have the 590A1 marine coat, the 590 and a couple 500's, all rack slicker than snot on a cat's d!(k, it is good to strip it down to see if there is something obvious but I wouldnt alter anything until you contact Mossberg or their reps, while QC is very good I am sure once in a while an issue gets by. I am sure Mossberg will make it right .
 
pirate604 said:
Have you tried to work the action with the barrel removed? Do the action bars move freely? It sounds like it is binding on something. I would check to make sure that the action bars are straight and parallel. If one is bent or crooked it can rub on the receiver and cause friction or binding.
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I just did on my lunchbreak. Nothing unusual. I now have made it a repeated exercise I do - the noise is lovely and I am getting minimal exercise.
 
bobdbldr said:
I have the 590A1 marine coat, the 590 and a couple 500's, all rack slicker than snot on a cat's d!(k, it is good to strip it down to see if there is something obvious but I wouldnt alter anything until you contact Mossberg or their reps, while QC is very good I am sure once in a while an issue gets by. I am sure Mossberg will make it right .
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I contacted Wolverine and filled out the warranty form. If shipping there and back is included (I don't remember if it is), I may just send it in. Now that I know the cause, it's not worth it for me for the, what, $60 or so to send the firearm, for a relatively minor issue even if it is under warranty (apparently the 590 A1 has a 10 year warranty). The Wolverine guy did tell me without seeing it he can't say for sure but I sent some photos to him. He said it could be the magazine tube that is the issue. If the ride both ways is covered, I may send it off.

By the way, I assume with yours, you have the magazine spring retaining clip still installed? And your end cap goes out by hand without issue?
 
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