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06-18-2012, 09:48 PM #1
Remington 870 last shell gets stuck in mag tube any ideas?
I have been having a little trouble with a remington 870 i picked up recently, The gun is an 870 express super magnum in 12 gauge, the gun was functioning fine without problems until i decided to replace the forend and stock with a hogue forend and pistolgrip.
Since then the last shell gets stuck in the magazine tube and will not feed into the chamber without pushing it forward a little by hand.
Its just the standard magazine tube that holds four shells, I have tried looking up answers to this problem online but the results keep coming back about extended magazines ect
Anyone had this problem with an 870 with standard mag tube before? I want to use the gun as a bedside shotgun but i really dont trust it until i can get it to feed the last shell consistantly
Last edited by james83; 06-18-2012 at 09:49 PM. Reason: spelling
06-18-2012, 09:54 PM #2
- Join Date
- Jan 2012
Is a shell stop on one side binding ? If one got tweaked, or debris behind it, when you removed and replaced the forend assembly, it could cause what you are describing.
06-19-2012, 12:29 PM #3
- Join Date
- Sep 2009
+1 I'd pull off the magazine cap, remove the spring & follower and make sure the mag is free of crud and doesn't have any dimples besides the factory ones near the end (if it has those). Also make sure that foreend isn't contacting the receiver when you pull it back (making it short stroke).
06-19-2012, 12:47 PM #4
- Join Date
- Apr 2012
- HappyValley, Oregon
PM you so if you need help let me know.
Tony Portland, Oregon Area
06-20-2012, 11:27 PM #5
Thanks for the info everyone, I checked the magazine tube looked pretty clean but i cleaned it out anyway, The shell stops seem to be in the correct place, I have not had time to clean out the action throughly yet but there isnt any major dirt or fouling that i can see, although im going to clean it sometime over the weekend, the hogue fore end did not appear to be contacting the reciever, but i switched out the hogue for the factory remington fore end and now the gun is cycling shells perfectly, I guess i will have to remove some material from the hogue fore end to make it fit correctly.
Gonna fire a few rounds through the gun over the weekend and see if it works correctly
thanks to everyone for the help so far
06-21-2012, 04:23 AM #6
Weak mag spring. Get a new one. Clean the inside of the mag tube and the follower. Test: take the mag spring out and stretch it out about four or five inches longer. Put back in and shoot. If this corrects the problem, get a new spring. Very common problem.
John"I go to my Fathers, in whose mighty company I shall not now feel ashamed" Theoden, King of Rohan
06-21-2012, 07:30 AM #7
- Join Date
- Mar 2010
I had the same problem with a weak magazine spring. Hope that helps.
06-21-2012, 07:56 AM #8
I'd shy away from a conclusion of a weak magazine spring for two reasons: the gun works fine with the factory forearm, and the gun (an 870 express magnum) is probably relatively new. This is a classic case of home gunsmithing where one's early attention to Sesame Street can be quite valuable. "One of these things is not like the other."
There is something about the replacement parts that is mechanically different from the factory part. Slow and careful (safe) operation of the action under very good light, examining all bearing surfaces and interactions of parts should point to the anomaly. My guess is that the new forearm is preventing a full travel of the slide. (credit to DoubleTapDrew).
06-21-2012, 08:58 PM #9
The moving parts that let all but the last round eject, are the same exact parts that let the last round eject. The only diff is the pressure on the last round being less because the spring is compressed very little with just one round in it. Streach the spring out and run some ammo through it. You do not need to fire the rounds off. Just eject all of them by hand. It will not hurt the spring in any way."I go to my Fathers, in whose mighty company I shall not now feel ashamed" Theoden, King of Rohan
06-21-2012, 09:54 PM #10
So im wondering if the reciever on the super magunum is thicker or longer perhaps?
I will examin all the bearing surfaces when the hogue grip is installed and see if its catching in places, maybe i could just use a dremel to remove some material from the fore end if thats the case?
Thank you to everyone for the help so far its much apprieciated
06-21-2012, 10:32 PM #11
keep shoving shells into it so that it is never on the last one in the magazinethe difference between genius and stupidity is that genius has its limits: Albert Einstien
06-22-2012, 09:26 AM #12
Leave it to sheepdip for full employment of the KISS principle.
I chose my words "I would shy away from...weak magazine spring..." because I would not completely ignore that solution (and OJ has the diagnosis portrayed well, and in fact that was my first reaction too). A newer, stronger magazine spring may well cure the problem.
BUT: The gun should operate identically with either forearm attached (if for no other reason than the owner may wish to switch back on some future date), and a new spring not curing the problem would be money wasted. (I still am of the belief that since the gun is not old, the spring is not weak.) Stretching the spring is a diagnosis tool and/or a quick fix (in case of a weak spring) but should not ever be a long-term solution. Coil springs are manufactured each to their own diameter of material and wrap, and changing that original wrap defeats the engineered purpose for that specific diameter of steel, coupled with that specific wrap to produce a specific tension. A weak spring stretched to produce more tension will before too long revert back to its original weakness and unreliability. Toward example, a malfunctioning "thumb-click" ball-point pen can very often be fixed by dismantling the pen and stretching the spring. Before too long, it will begin the identical malfunction.
James, I would avoid altering that new Hogue forearm unless the problem is quite obvious, and easily remedied (as you speculated) by removal of a very small amount of material. My procedure would be to send it to Hogue specifically describing the problem and the gun it is fitted to (perhaps accompanied by copies of purchase receipts). Gun companies are the holdouts in manufacturing America, in that they still for the most part treat their customers right. You may be doing that company and its customers a favor by reporting your discovery.
06-22-2012, 08:56 PM #13
thanks for the kind words spitpatch.the difference between genius and stupidity is that genius has its limits: Albert Einstien
06-22-2012, 10:44 PM #14
No sweat. While OJ and I are dinking around with stretching springs, carving off pieces of forearm and mailing stuff to manufacturers, you're loading the friggin' gun. It deserved recognition.
06-25-2012, 12:20 PM #15
Ok guys thanks for all the replies. I think im going to take your advice spitpatch and send the fore arm and a letter explaining the problem to hogue.
I took the gun out this weekend and fired a bunch of shells through it with no problems using the factory fore end, with the hogue fore end the last shell would still get stuck in the chamber. My friend came along with me and brought his remington 870 i tried the hogue fore arm on his 870 and it worked fine, I also tried the magazine spring from his 870 in my 870 and still did not fix the problem (the last shell still got stuck in the chamber)
His gun was new and unfired until saturday so im guessing his mag spring would be a good thing to try before i bought a replacement. The only thing thats really bugging me about this problem is why the gun operates fine with the factory fore arm but not with the hogue fore arm, I never had a problem with the hogue fore arm on my previous 870, and the fore arm works on my buddys 870 too.
Again the only difference i can think of is my 870 is an express super magnum, my friends 870 and my previous 870 are/where express magnums
yeah im confused haha
06-25-2012, 08:58 PM #16
The gun has no idea how many shells are in the mag tube. The inner workings of the gun function the same each time you cycle the action. If the Hogue will function on the first round it will function on the last round. Unless your gun has some type of demonic possession. So, the only thing that changes in the inner workings of a pump shot gun, is the spring tension of the mag tube.....Everything else is 100% the same 100% of the time. I see from your last post that you say the round got stuck in the chamber. It was my belief that we were taking about the round getting stuck in the mag tube. Cheap ammo will stick in the chamber after fireing sometimes. Keep the chamber clean and a good chamber polishing will do wonders. I think that you have some kind of issue that is not allowing the mag tube release to fully release the round into the open chamber and the extra spring pressure from the loaded mag tube is pushing hard enough to over come this on all but the last round(least amount of spring pressure in a loaded mag tube) I am still 100% sure that if you stretch you mag spring out to increase the spring force it will work. But, it will not cure the problem. I would have it fixed in about one minute, if I could get a look at it."I go to my Fathers, in whose mighty company I shall not now feel ashamed" Theoden, King of Rohan
06-26-2012, 11:18 AM #17
Well, my vote is against demonic posession. With the operator having used another brand new spring, I'm also leaning futher away from my first impression of inadequate spring strength.
I also would like to know a source of "cheap ammo" for a 3.5" 12 ga.
And, like OJ, I am confused now about "stuck in chamber" vs. "stuck in mag tube".
Kudos to James for a pretty darned good elimination of variables using a friend's gun for parts (good friend too!). Make sure you tell Hogue about your gun being the monster super magnum one.
06-26-2012, 11:44 AM #18
Sorry about the confusion i was typing really fast on that last post and made a mistake, I meant to say stuck in the mag tube again not chamber, there are no problems with shells feeding into the chamber, Its just the forth shell gets stuck in the magazine tube and will not feed, but only when the hogue fore end is installed, there is not a problem when the factory fore end is installed.
As i say i did try the mag spring from my buddys 870 in my 870 and that spring must be pretty new because he only bought his gun a month ago. I tried the hogue fore end on his too without a problem. I ordered a new mag spring for my gun anyway so i'll try it and afterwork tonight i'll stretch the old mag spring
Perhaps the problem is demonic posession afterall
06-26-2012, 05:51 PM #19
Not sure he ever said what size/type/length of 12 ga ammo he was using. And the mag spring from his friend's gun was not from a super mag, just from a standard 870. so, my question is, that if the gun can use the longer 3.5 inch rounds, does it indeed require a stronger mag spring."I go to my Fathers, in whose mighty company I shall not now feel ashamed" Theoden, King of Rohan
06-26-2012, 08:10 PM #20