Remington Mod 11 mag tube thread cap prob

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I am new poster. I have lurked on THR for years. I never thought I would be able to wear out an old but well kept 1913 vintage Remington Model 11 (12 ga, 30", modified). It has been in family since 1960. However after shooting several rounds of trap recently, the magazine cap has started popping straight off the mag tube. Not turning, just pulling straight over the threads, as in worn or stripped threads. Experienced local gunsmith concurred that the mag tube threads were worn out. Cap appears to be OK. He had never seen it either. Questions: Is the mag tube silver soldered into receiver or is it screwed and held with set screws?? Is it even worth the idea of replacing the tube if I can find a parts gun? Or there other alternatives?
 
There is a set screw at the right front of the receiver that locks the threaded mag tube in the receiver.

I might try expanding the loose cap threads by driving a slightly larger mandrel in it.
Maybe a proper size Craftsman socket?

Might have to heat the tube slightly red first to keep from splitting it.

What have you got to lose at this point?

rc
 
I have a novel idea. Use epoxy to create repaired threads. Do a very thorough job of cleaning the threads on the tube. Coat the inside of the tube, the cap, and exterior of the non-threaded portion of the mag tube with a good coat of oil. Do not get any oil on the threads. Coat the threads with a good grade of Devcon Metalic epoxy. Allow to set and then remove the cap and dress up the threads as needed. As the epoxy is squeezed out as the cap is screwed on, remove the excess to aid in cleanup after drying.

I've not tried this on a shotgun but have used a similar process on other non-structural threads to good results.
 
thanks for the help! Rem 11 mag tube

Thanks for the help. The gunsmith was a bit uncertain about the silver solder versus threaded attachment of the mag tube. If soldered it was not going to be practical to replace. Planning to go to gun show next week anyway and I will keep my eyes open for a parts gun with decent mag tube/cap.
I did try the teflon tape idea early last week and it pulled right thru the tape. I even tried aluminum foil on the threads which is an unscrupulous mechanic trick for for stripped cylinder head studs. That did not work either. Do not ask about how I knew that technique.
The idea of using epoxy had not occured to me. As much trouble as I had recently after using Acraglass to bed around the tang screws on a butt stock that may be a viable alternative. Even after I had used the release agent on all parts including the screw I struggled to get that screw out. If I cleaned the mag tube threads and roughed the surface finish the epoxy might adhere very well. Lather up the cap with release agent and/or oil and screw it on after applying the epoxy. I like it. After all I do not have much to lose.
 
I know that there are interchangeable extensions which means that tubes are threaded the same on one end. They are likely the same on the other. It might be cheaper and easier to put on a piece from a newer gun that you can buy parts for.

Try looking online at numrich before you do anything else.
 
Thanks again! Rem mod 11 mag tube

I did some Interenet searching the last couple weeks because I was almost certain someone else would have encountered the same problem. Did not find much. Several discussions re A5s coming loose at mag tube and receiver interface. Numrich is "out of stock" for the 5 shot mag tube and caps. Price is not bad if they had one ($21). The other gun parts sites did not list it either. I also had noted the discussions re the extensions and matching threads. Checked the cap off my 1980 vintage Rem 1100 and it was different thread. The 11-48 might be similar. I did find a oval head screw on the right side of receiver in front of the bolt release button that appears to serve as a set screw. I do not know if the expanding mandrel idea would work but it might be a good last resort. The epoxy idea is attractive because it is reversible. It may not be easy but the epoxy could be removed from the metal threads. Thanks again!
 
If there are threads still left on the mag tube, the expanding mandrel is the Only way I know to repair it and make it last another 100 years.

I would not have suggested it if I didn't know it would work.

If the mag caps threads are gone, that's another issue entirely.

rc
 
Last edited:
Go to ebay and buy a Remington model 11 magazine tube. They are usually cheap (less than $25) Replace the tube. If you have a 5 shot M-11 make sure the tube is the correct one.

The tube is threaded into the receiver and a screw through the side of the receiver locks the tube in place. It IS NOT silver soldered (or soldered at all).

You may want to get a magazine cap too, if the threads on yours look damaged.

It should be a 5 minute job after you take the forend and barrel off.

Make SURE you have the proper size GUNSMITH HOLLOW GROUD screwdriver BEFORE you begin. Use penetrating oil and let it sit overnoght. If you chew up the head of the small screw that locks in the magazine tube you will regret it.
 
thanks for all help!

I have at least three good fixes.
1. Find a good used magazine tube. I checked Ebay again. Nothing for a 5 shot Mod 11 now. There was one sold back in December. Watch Gunbroker and Numrich, etc. I do have smithing screwdrivers that can be shaped for set screw. I suppose a strap wrench can be used on tube?
2. Try the experimental epoxy fix if I cannot find replacment tube. It would not be permanent but it might out last me.
3. Expand the existing tube thread area using heat and mandrel. I am retired engineer and have a few friends left with machine shops that probably have centering expansion mandrels that might work. This may be expecially attractive if I end up with a parts gun that I could eventually resell.

Thanks again.
 
reminton Mod 11 magazine fixes

The fix # 2 using epoxy in to fill in the threads did not work. I used JB Weld steel formula with tensile strength about 4000 psi. Good stuff. It felt tight but the forend jumps about one thread pitch for each shot. At least it did not pop the cap completely off.

I posted WTB classified ad on Shotgunworld.com. I keep watching Numrich, Ebay, Gunbroker, etc for separate magazine tube. There are some parts gun lots on Gunbroker that include a tube with receiver and other parts that I may have to consider. I am CR but most want to ship to FFL because includes receiver. The last weekend gunshow only had two Model 11s and both were nice guns. There were a bunch of A5s and some were junk but they still want real money. I continue to search.

I will clean off the epoxy and try the fix #3 expansion mandrel technique soon if I do find a suitable tube.
 
Numrich has rem mag tube 12 ga

Numrich finally got a used part gun and listed a magazine tube. I ordered it. I will post again when I get it installed and working.
 
Rem mod 11 mag tube from Numrich works great

Thanks to all of you who helped! I got a replacement magazine tube for the Remington Model 11 from Numrich a couple weeks ago and it looks a lot better at the cap threads. Only $25 delivered. Local gunsmith removed old tube and installed replacement tube free of charge. I could not get the old tube to unscrew at the receiver but I did not have good vise or good strap wrench. Gun worked beautifully last weekend for a few test shots. Probably take it to the trap range next weekend.
 
Still like to have seen you take an expanding mandrel to the old one and see if it worked or not.

Anyway, glad you got her going again at little cost.

rc
 
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