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Posted: 12/25/2003 10:06:03 AM EDT
| Ok, got a brand new 870 supper mag recently and took it out shootin today. First off, loads up nice and normal, take a shot then the damm thing won't let me eject the shell. Whats wrong? was pressing the slide relise, witch actually got stuck in the down position for a wile too. I finaly had to take the barrel off to even get the spent round out, and the bolt has WAY to mutch exesive where on it for just 1 shot and working the action a few times. Any body have this happen to them? |
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Run your finger around inside the chamber. Is the chamber really rough? If it is it can be burnished with 0000 steel wool, old cleaning brush, rod and a hand drill. High brass base on the shell might be expanding into the rough chamber making extraction next to impossible. |
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I think we were shooting 2 3/4" shells but as of the load I have no idea, just buckshot, something we got at wallmart probobly. I didn't put it together though, got it at wallmart as the display model. But it seems to cycle real nice and smooth dry though. I'll go check in a little bit if the chaimber is rough. Is it normal though on 870s to see where on the bolt with this little usage though? Could posibly be from takeing the barrel off to get the shell out too, what do you think? |
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Sounds like something is goobered up in the action lock, and slide release system. As far as wear due to cycling, can't tell you waht is normal or not. It may be that is a side effect of your other problem, or stuff is just wearing in. Also I'm not clear on this, are you pressing the slide release EVERY time you work the action, or just when it locks up? Some play between the reciever and barrel isn't that unusual. |
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There's been some complaints lately of new 870's having some roughness or burrs on the locking block in the bolt, and burrs on the locking recess in the barrel extension. Field strip the gun, and take a look at the top rear edge of the bolt's locking block, and at the rear edge of the barrel's locking recess. If you find any obvious burrs, remove only the burrs and sharp edges. Usually, this, and some shooting will break the gun in, and you have no more problems. |
Bingo, We have a winner!!!!!! Pull the barrel, then stone the leading edge of the bolt lock in the top of the hood of the barrel to break the edge. On the bolt lock, again, break the top edge with a stone. To remove the bolt after you have the barrel off, pull the forearm almost all the way forward, then reach up into the action from the bottom and push the mag shell catch in against the receiver inner wall (helps to pull the trigger group by presssing out the two pin that hold the FCG in the receiver). I can't remember, but there may be a catch on the other side as well. To reinstall, drop the bolt back on the carrier, then slowly load/slide the action while pusing back in on the catch(s). |
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That does make sence with the bolt, I'll go check it in the morning and let ya know if it gots a burr on it. If thats not the problem though, I'm going to make a trip to rapid fire that is if there open tomorow. Would it be a good idea to bring it along and see what they think or will I just be waisting my money? |
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Just break the edges off the bolt lockup at the lock and barrel hood, and you will be set. If you noticed, when the rifle locked up,you removed the barrel to unlock the action/clean the jam. This allowed the lock to lower out of the barrel hood, and allow the action to move, which is the only problem with the New shotgun in regards to the action locking up. |
| Well, got it workin good the other day. Took it into rapid fire when I whent up there, they looked it over and couldn't find anything but said to shoot it some more to break it in. Anyways got home and put some better longer brass shells in and my dad got it to work fine for him. We were thinking the gun was giveing us problems because of the chepo short brass shells that we first put in it right off. Could that have been the problem? |
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STONE THE LOCK AND HOOD EDGE!!!!!!! IM me an email address and I will send you photos of the two areas to stone. When you fire the shotgun, the brass expands and wedges the back of the hull tight against the bolt. With the burs/sharp edges at the bolt lock/hood, the bolt will not unlock (lock will not cam down to clear the hood cut), and you get a action jam. Some low brass may cause you more of a problem than high brass, but once the parts are stoned, none of the shell will cause you any problems. |
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i had the same problem once or twice with my 870 when i first got it... locked up the slike release... i ended up jerking the slide forward, and was then able to activate the slide release button and clear the shell... dano, i would greatly appreciate those pics as well... |
| I had the same problem with one of my 870s. Went trap shooting and the only trap loads the local Wal-Mart had left were Federals. Locked up every third or fourth round. Went back to Winchesters and the problem went away. I'll never use Federals again. Could that be your problem? |
To further explain, some of the short brass has sharp lips on the brass edges. When the shell brass expands, the front edge will bit into the chamber walls. Since the lock/hood has burs, and the bolt can't force the wedged hull forward, the lock never clears the hood edge, and this locks the action up. Mike, can you host two photo so these guys will just stone the fucking edges of the lock and the hood and we can be done with it. That way we can put a end to this post, and not get into what magic shells that will work in the shotgun or not. Bottom line is it's a pump shotgun, anything that you can wedge down the chamber will fire, and eject from the shotgun. But, the factory send the shotguns out a little rough, and by just doing a little work, the 870's can be made to be as smooth as a Model 12. If someone wants me to do a write up on how to work over an 870 then I can do such, but lets just start with cleaning up/stoning the bolt lock and hood lock to solve the simple fix of ejection problems. |
| Hey Dano, thanks very much for the offer but I've never had a problem with anything but Federals (don't care for them anyway) I'm a Glock, Sig and Remington armorer so I can clean it up myself. I've not seen any burrs or rough edges on the bolt camming surfaces or hood though. Hope you enjoy your stay in Denver, the weather, other than being a little chilly at night, has been great. |
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Pics and text are from Dano: Here are the two area that need to be stoned on the 870 to solve the cycle jaming. The lock up area is on the barrel hood, and the bolt lock is on the top of the bolt, which you need to pull out of the carrier to work on. To pull the bolt: With the bolt/forearm pulled forward, reach into the receiver on both sides and press in on the mag and slide straight springs to release the slide from the receiver. To reinstall the insert carrier and bolt, press back in on the flat springs as you push the slide/bolt back into the receiver. Dano523 BARREL HOOD  LOCK HOOD 
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That's funny...I've never seen a Mossberg that would even come close to what's normally referred to as "functioning." Besides, how any living creature capable of reasoning would choose a Mossberg over a Remington is completely beyond my understanding. |
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