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R498, R632, 1220 & 2384 Magazine tutorial!!!

20615 Views 55 Replies 19 Participants Last post by  bertn, 
T
Some magazine info!!!

Picture "A" This is a side view of the 1220, R632 and R498 mags. From the side, back, front and bottom you cannot tell the difference between a R498 and an R632. You have to look at it from the TOP to see the small but very important difference. The 1220 mag is there just for comparison, and so that you can see the similarities in the manufacturing method used to make those mags. The "angle bar" channels are formed identically.

Picture "B" Now you can see the difference between the R498 and the R632 mags. There is a small rectangular hole in the front of the follower that will allow the installation of the R504 short adapter, that is if you have one!!!:rolleyes: In pictures "A" and "B" the 1220 mag is there just for comparison. Also you can see that the R498, R632 and the 1220 share the same manufacturing procedure for forming the "angle bar "channel.

Picture "C" is a comparison of the 1220, 2384 and the 3235 mags. When Mossberg started production of the 2384 magazines they changed the way the angle bar channel was made.

Picture "D" Shows the back detail of the 1220, 2384, and the 3235 mag. The hole at the bottom of the magazine back and front of the 1220 and the 2384 mags is to allow the tabs (which you can't see) on the mags bottom plate to be folded into the mag body which locks the bottom plate to the mag body. Only problem with this method of retaining the mag bottom plate to the mag body is that if you bend that tab to remove the bottom plate more than 2 times you will generally need a new bottom plate due to metal fatigue causing the tabs to break off.:mad:

Picture "E" Shows what the magazine bottom plates look like on the different mags. The 3235 bottom plate design is a big improvement over the 1220 and 2384 designs!!! No tabs to break off!!! The R498 and the R632 share identical bottom plate construction and attachment methods. So hopefully these pictures will answer any questions you have about these original equipment magazines!!!

A mystery mag??? A 2384 aftermarket clone??? Some things to be noted. In picture "B", the 1220 has a slot in its follower to allow for the adjustment of the mag to accomodate the SHV-L-LR ammo. So does the 2384 but I didn't post that view of the 2384's follower. The mag pictured above has no such slot in its follower, so it has to be a LR only mag. The main body of the mag looks like it was made by Mossberg, or at least on tooling originally made for Mossberg, well that is my guess. The bottom of the mag has a different base, and I really like the idea. I now know how I am going to easily repair a REAL 2384 where the tabs are broken off of the base plate that lock the base plate to the mag's main body!!! So based on the follower this is a LR only mag. The mags base plate will be easy to remove if needed, and easy to fabricate, if lost or damaged!!!:bthumb: Probably made with dies that Mossberg sold when they got out of the .22 rimfire manufacturing, again that is my guess. If you only plan to shoot LR I would be willing to bet money that these mags would work just fine in any Mossberg semi or bolt gun that takes a 1220 or a 2384!!!
God Bless, Frank.

Am in the process of replacing the photobucket blurred pics.
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Penage Guy
I'm afraid I have to revive this thread with a question or two. I had a Mossberg 340 BA but no longer have it. I was recently given this magazine and told that it was for the 340 BA but can't compare it with the original that was in the rifle. I cannot use the magazine and wish it to find a home that needs it.

A fellow shooter has suggested that "Long Rifle rounds may not feed due to the absence of the spring loaded adjustor." I'm not sure what that means.

Another shooter tells me it will fit the following models: 340B, 340K, 340B-A, 340K-A, 340TR, 342, 342K, 342KA, 350K, 350K-A, 352, 352K, 352K-B, 352K-A

My questions: (a) is there something wrong with this magazine and (b) will this magazine work with a Mossberg 340 and/or any of the other models?

Here are a side and top view of the magazine, which measures 1.375" (as close as I can tell with my caliper). Thank you.


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Follow the link...

Penage Guy said:
I'm afraid I have to revive this thread with a question or two. I had a Mossberg 340 BA but no longer have it. I was recently given this magazine and told that it was for the 340 BA but can't compare it with the original that was in the rifle. I cannot use the magazine and wish it to find a home that needs it.

A fellow shooter has suggested that "Long Rifle rounds may not feed due to the absence of the spring loaded adjustor." I'm not sure what that means.

Another shooter tells me it will fit the following models: 340B, 340K, 340B-A, 340K-A, 340TR, 342, 342K, 342KA, 350K, 350K-A, 352, 352K, 352K-B, 352K-A

My questions: (a) is there something wrong with this magazine and (b) will this magazine work with a Mossberg 340 and/or any of the other models?

Here are a side and top view of the magazine, which measures 1.375" (as close as I can tell with my caliper). Thank you.


Click to expand...
Follow the link to a thread in the "Mossberg Technical Support" thread. The pictures should tell the story. http://www.rimfirecentral.com/forums/showthread.php?t=393634 That is a 1220 magazine, by the way!!!
God Bless, Frank.
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S
Yes definitely a 1220, but it's missing the adjuster tab (lower right in the picture) that lets it hold Short-Long-LongRifle correctly.


Without the adjuster it's going to be a bit long for even the LR, which may lead to miss feeds. It might possibly be usable in a bolt action if you watch the feed, but could easily have a real problem in a semi auto if the bullet jams and the bolt crushes the rim.

On the 'kinda...sorta good' side, without the adapter ears, the mag may fit into some of the other guns listed for the R632 (same basic shape, but without the adjuster).

Though it would still have the feed problems unless you make a shim to go in front of the follower.

Bob
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Penage Guy
Thanks for the explanation, ShootsAtSky. I think I'll throw it in the garbage.
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S
Before doing that, you might list it in the Pay It Forward thread, someone may need it. The staked ears were a weak spot and some of them have broken or loosened over the years.

Bob
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V
I have a few of these mags that have the insert. I also have a mag and a loose insert. Does the insert bottom hook onto the mag spring?
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T
In a word...

vadrums said:
I have a few of these mags that have the insert. I also have a mag and a loose insert. Does the insert bottom hook onto the mag spring?
Click to expand...
In a word... yes it does!!!
God Bless, Frank.
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B
142a said:
do you want to sell the R504 short adapter, i have a couple of mags missing the adapters.
jim
Click to expand...
Try Numrich
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B
My 140B lists the R632. It does not have a D shape hole in the follower. Only a slot for the short adapter.
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photoman12001
I've got a quick question. Maybe I overlooked but I need to know which of these mags will fit a 144 (old one with t-bolt). I have one and the mag that came with it is really messed up. It looks like someone crudely cut it down to fit flush with the receiver and doesn't feed well. I snagged a couple of nice mags online, an R632 and an R498. Should they both work? I would just try them but my rifle is off having some work done and won't be back for a few weeks.
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T
I do believe...

I do believe that BOTH mags will work just fine. The only real difference between the 498 and the 632 is that a 632 will have some type of opening in the follower to allow the "short adapter" to install. A 498 will not have such an opening unless someone has swapped followers or modified a follower, but BOTH of them should work on your rifle!!!
God Bless, Frank.
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B
mossberg short adapter

Digging up this thread since I just got a Mossberg rifle (350k) that is missing the short adapter in the magazine.

It's the 1220 mag with the D hole in the follower.

Does anyone has a picture of the short adapter?
I can see it sitting in one if the pictures in this thread but can't see how it attaches in the hole.

I'm hoping one of you has a good picture(s) of this part so I can try to fabricate myself an adapter since it seems they are hard to find.

Many thanks,
Bert
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T
You won't like the answer...

You won't like the answer because it means that the S-L-LR adapter piece is most likely broken and lost somewhere in the mists of time... so to speak!!!:rolleyes: The S-L-LR adapter attaches to the BOTTOM of the follower spring at the front of the mag. You would have to disassemble the mag to install one if you could even find one, which I highly doubt.:( So at least you know, although I don't believe that you will be able to do anything about it.:(
God Bless, Frank.
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B
Thanks Frank for your quick reply. This does not sound good :(
I also doubt I could ever find one so that is why I would like to attempt making an "aftermarket" adapter.

Still don't exactly understand how this is attached to the follower spring and could not find a picture of it on google images.

I took the mag apart and there appears nothing broken off inside.
Attached a picture of mag body and follower(follower should be facing the other side obviously), hope this helps.

Does someone have a picture of the whole short adapter part?
Preferably a disassembled mag and if not then a close up of this part on the magazine would be appreciated.

Attachments

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T
The only problem...

The only problem with taking these mags apart is that you are VERY likely to break one of the two little tabs that are folded into the holes on the bottom of the mag to retain the base plate. I have repaired a few of those bottom plates on the 1220 and 2384 mags but it is a little bit of a pain to do so, so that is why I haven't pulled one of my mags apart. Cause Mossberg din't just bend them in a little bit, its a 90 degree bend, and you know what happens to thin metal when you bend it back and forth a few times... it breaks.:mad: I'll think about it... no promises though.
God Bless, Frank.
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B
Oh don't worry, don't take it apart, not worth the risk.

It's certainly not a durable design.
The front tab of mine has a 90 degree bend but the back one only about 45 degrees so fortunately I was able to pop the back one out with minimal bending and then I could slide the front one out without bending.

In case I can't get a good picture of an original one then I will just make a fixed "ramp" on it for 22lr only. I don't have any short or long ammo anyway.

**EDIT**
Never mind about the adapter.
I'll give it a try without it, looks like the rounds are angled upwards enough that it won't even matter.
Previous owner had cycling issues and sold the rifle because of that. I got the rifle all cleaned and lubricated and
also tweaked the mag lips a bit and it's cycling great now while "dry cycling" at my house (had the firing pin removed just to be sure lol).
We'll see how it goes at the range :)
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