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Posted: 11/10/2016 4:23:58 PM EDT
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So I have an 870 tactical and during a class ran into a few issues that I am seeking help to resolve.
1st. Is there a way to help clear type 3 malfunctions by modifying the elevator? Seems like it can be a pain to try and get the malfunction cleared. 2nd. My thumb got tore up after 4 days of loading rounds into the mag tube. Is there a way to ease this? Filing the reciever maybe? Ideas? Thanks |
| As for your thumb, I tend to think the issue is more technique than hardware. I keep my thumb in line with the shell, push up quickly till the shell clicks into the mag tube. The thumb isn't scraping or catching on anything. Just try something other than what you've been doing. Or maybe gloves. |
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Thanks for the replys. Not sure if that link k really answered my question. The 870 is about a year old so it would have the newer parts. As far as it being operator error and short stroking the gun that's also not the case. You set up a type 3 and you can pull back hard on the pump and it can take several tries to get it to flip out the good round. Then you rack the gun and it will sometimes eject the spent hull or more than likely, it gets jammed forward and is hard to unlock the bolt. The instructors said all 870s suffer from this due to their elevator design.
As far as the shell loading it is more than likely a technique but after loading 700 rounds over 4 days it may be just what happens due to the round count. You have to Load rounds quickly and it's not always easy to take your time and get a solid index. Gloves are an option but I hate gloves. Thanks |
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Quoted:
Thanks for the replys. Not sure if that link k really answered my question. The 870 is about a year old so it would have the newer parts. As far as it being operator error and short stroking the gun that's also not the case. You set up a type 3 and you can pull back hard on the pump and it can take several tries to get it to flip out the good round. Then you rack the gun and it will sometimes eject the spent hull or more than likely, it gets jammed forward and is hard to unlock the bolt. The instructors said all 870s suffer from this due to their elevator design. As far as the shell loading it is more than likely a technique but after loading 700 rounds over 4 days it may be just what happens due to the round count. You have to Load rounds quickly and it's not always easy to take your time and get a solid index. Gloves are an option but I hate gloves. Thanks Is it just the edges of the loading port that are bothering you? |
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Would you describe a "type 3 malfunction" as a fired shell casing being stuck in the chamber, with the bolt open, and a fresh round resting on the shell carrier (or just after that + moving the fore end forward and then realizing the situation)? If so, that's what I'd call "failure to extract" but maybe I'm weird as I don't use type # terminology... Anyway, check out this page about 1/4 of the way down: http://www.rem870.com/2012/11/06/remington-870-malfunctions-clearance-double-feed-stove-pipe/ A clearance technique is described and there's a YouTube video showing how the author cleared this malfunction during a match. He looks experienced, and still it took almost 10 seconds to clear and resume firing, which is why most instructors will advise you to transition to another weapon rather than attempt to clear such a difficult malfunction (which may even require a tool). If this ever happens more than once a session, you've either got some really crappy shells, or there's something not-so-smooth about the chamber of your shotgun. I would suggest a chamber honing by someone properly equipped to do it. (You can do so yourself with some Scotch-Brite, a power drill, old cleaning brush and rod, maybe 0000 steel wool first if it's really rough, and generous lubrication with oil as you hone). It will be messy.  As far as instructors saying the bolt's hard to unlock on a stuck casing due to elevator design, that doesn't make any sense. It's due to the extractor attempting to pull the shell's rim backwards, and it not wanting to budge. The elevator (actually Remington calls it a carrier) is not involved at that particular point in time. Something will give, either the shell moves, the extractor slips off, breaks (WAY more likely if MIM), or part of the rim rips off under the extractor. I would strongly suggest gloves for a 175 shell-per-day firing schedule. That's going to be hard on anyone's fingers. Were yours the only ones bleeding? If any portion of the loading port is sharp, it can certainly be sanded/stoned down until smooth so it won't be a discomfort. Obviously you'll lose your finish there, but the gun can be refinished if you want. When I load an 870, I use the top/front of the shell to depress the shell carrier as it enters the loading port, then push the back into the tube until it's past the shell latches. At this point, the carrier has slipped off the rim of the shell and is now resting on my thumbnail. I lower my thumb down and the lifter stops at rest. If my thumb contacts the loading port, it's on the inside of the receiver near the bottom of either sidewall while moving forward. That's not supposed to be sharp enough to cut you, but on an Express model it's certainly possible it was left too rough. |
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Yes that is a type 3. Expended shell in the chamber and a live round behind it. The 870's elevator seems to hold onto the shells very well making it a pain to fix. You can fix it like that in the video, or you can try rack and roll, and hopefully it works. Sometimes that works, other times you have to smash the butt of the weapon on the ground while working the pump.
I was just trying to see if anyone knew of a simple mod to make it easier to fix in the field. I will have to wear gloves during the next class. Not my fav but with that high of a round count I gotta do something. I was the only one that I know of that had cuts on their thumbs. |
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