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Discussion Starter · #1 ·
I have been meaning to get back on here and post this for a while now mabey some of you can explain what this is and how to fix it,here goes.
I have an 870 express 12ga that I bought for Home Defense with the factory 7 round mag extention and the 18'' barrel.I also have a regular 870 express 12ga with a 26'' barrel.I went to a skeet shoot a while back and put the 26'' barrel on the reciever of my HD gun, so I could get some rounds through the HD reciever and everything went well 100 + rounds of the cheap birdshot (with the aluminum casing) and no problems.
I then went to the range later with the 18'' barrel back on the HD reciever with some buckshot(brass case end), a couple slugs(brass case end), and some birdshot(aluminum case end) that I had lying around. The buckshot and slugs were no problem, but when I shot the birdshot with the aluminum casings they would get stuck and not eject when I pulled back, I might shoot 2 or 3 then could not eject 1 and I would have to hit the buttstock on the ground to be able to eject the round, then I might shoot 1 or 2 or 3 more then the same problem. and upon visual inspection the stuck casings looked the same as the ones that ejected.This happened only with the aluminum cased shells. Now some people may say that you should not shoot birdshot defense and while I agree with that my worry is that this is my SHTF gun and in a SHTF situation you have to use what ammo you can find.
So my question is, is the chamber on the barrel just tight and if so can I get a gunsmith to reem it out or do I have a more serious problem?
Any info on the matter will be greatly appreciated as I have found out from being here is that there is a wealth of knowledge here.
Thanks
 

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Discussion Starter · #3 ·
The only other problem I can think of is if the shells you are shooting are longer then the chamber. Like shooting 3" shells in a 2 3/4" chamber. But this is unlikely as the HD barrel is probably 3" anyway.
I have not seen alluminum cased 12 shells to my knowledge, If you measured the fired cases with a good caliper I bet the ones that stuck were larger diameter. Mesure 1 before shooting and measure the same case after shooting. Then compare to the measurements of the brass fired cases.
Edit: I do have some Winchester fired target cases and measured them along with some fired brass cases. The allum were .005 to .008 larger. So don't use allum cased ammo for home defense.
 

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Discussion Starter · #4 ·
I had a similar issue then my extractor fell out and i lost it. I replaced the spring and extractor and have not had an issue again. I have a 870 with 18in barrel as well.
 

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Discussion Starter · #5 ·
where does one get aluminum hull ammo?

I can't honestly say I've ever seen it.

hell, I wanna say most of the big value packs I've bought were all low brass at the least.
 

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Discussion Starter · #6 ·
the ammo that I was using was from wal-mart the 100 round packs that they sell for skeet shooting and such.
after some research I found some info that people who are having these problems can just hone out the chamber with some #000 or #0000 steel wool wrapped around a bore brush and chucked into a drill and just polish the inside of the chamber so I might give that a try
 

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Discussion Starter · #8 ·
This is pretty common with newer 870s shooting the bargin barrel 12ga from walmart. I polished my chamber lightly with a rag that had a semichrome on it and I have not since had the problem. Reeming seems excessive to me. A very light polish solved my problem. I'm not even polished to the point of it being a mirror finish...I am stressing very lightly polish it and see if it helps.
 

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Discussion Starter · #9 ·
I had the exact problem with a friend a few months ago, i looked it up and since we were using winchester super target i just figured it was the ammo. when i looked it up on numerous forums sure enough, guys were having issues with the exact same ammo not ejecting.
 

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Discussion Starter · #10 ·
I had the exact problem with a friend a few months ago, i looked it up and since we were using winchester super target i just figured it was the ammo. when i looked it up on numerous forums sure enough, guys were having issues with the exact same ammo not ejecting.
 

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Discussion Starter · #12 ·
The problem is for the "short brass" aluminum crap birdshot from walmart.

The problem is becuase when it fires...the short brass grabs the cylinder wall, and if you look, the 870 express 18.5" home defender version the bluing/finish is down in the chamber...it makes it grab hold and not let go

Like someone said before...a light polishing of the chamber will resolve this issue
 

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Discussion Starter · #13 ·
Model 870 Extraction Problems

Many Remington Model 870 shotguns have had extraction problems, especially those produced since 1997. The problem is the chamber wall. Special lubes might work temporarily, meaning for a few rounds, and changing ammunition can help to some degree but in order to fix the problem a shotgun barrel needs remachined, polished or many cases replaced.
 

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Discussion Starter · #14 ·
where does one get aluminum hull ammo?

I can't honestly say I've ever seen it.

hell, I wanna say most of the big value packs I've bought were all low brass at the least.
Winchester & Federal both use aluminum bases for their cheaper lines of shotgun ammo...Remington may as well, can't remember offhand.
 
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