Stevens Model 77 - 12GA Pump Jaming

ForceFed70

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Hi guys,

1st off - My 1st post and I'm a gun noob, so please bear with me.

Got my PAL a few months ago and was given a Stevens Model 77 12Ga pump by a family member. It had been neglected and was missing some parts (magazine follower, spring, cap).

I tracked down the parts, got it back together, then took it all apart and cleaned and re-lubed everything (thanks youtube!). It felt much better and the action seemed pretty smooth. However, I was really dissapointed the other day when I took it out for the 1st time.

It kept jaming on me. This is where it gets tricky as I don't know terminology well, but I'll do me best:
What appears to happen is that periodically a shell comes forward out of the magazine tube when it shouldn't. This results in the action jaming as 1 shell is being fed into the chamber and another shell gets wedged between the "flapper piece" and the piece the feeds the shell forward into the chamber. The action is trying to get the flapper piece to point back up again (position it is supposed to be in when the action is closed) but binds up because a shell is wedged in there and the flapper can't move to it's proper position. Meanwhile there is a shell nearly in the chamber and another shell about 2/3rds of the way out of the magazine tube.

What I kept having to do was get in there with a couple of small pocket knives and work the shell back into the magazine tube. Where it should have stayed until the action was cycled again.

I know, I know... A lot of you are going to say "You don't have the experience -take it to a gunsmith". But in all honesty, the research I've done on this gun says it's not all that desirable, and frankly I think I'll end up paying a gunsmith more that what it's actually worth. Plus, I like to learn, am fairly mechanically inclined, and think that the best way to learn is by figuring it out yourself.

Any advice would be appreciated. Heck, even schooling my on the proper terminology would be helpful so I don't sound like such a dumbass when trying to explain the problem.

Thanks! :cheers:
 
Did you get all the springs back into her? I have a 77B and when I first took it apart to clean I lost the little tiny one which goes on the side to lift the 'flapper' arm thingy (I think we are talking about the same thing). I occasionally still get a jam like that with the shell going under the bolt. I find it isn't as bad if you make sure to fully shuck (short shucking even slightly seems to aggravate the problem) it and take care when loading the shells into the tube.
 
Thanks for the reply. I'm pretty sure I got all of the springs back in. It jamed like this before I took it apart to clean and lube, and it only seems to do it 1 in every 10 rounds or so.
 
Hi I had the same problem with mine. It sat in the safe for about ten years after I bought it because of that. The seller never mentioned it however about a month ago I figured I had nothing to loose so I pulled it apart when I took the action apart I noticed a screw had backed out some on the side of the trigger group. I screwed it back in and it has run fine since. I will see if I get some time this weekend to pull it apart and take a picture. I had searched the Internet for info on disassembly but found nothing so I just started to pull stuff out of it. If you pull the mag tube be aware that there is a piece that likes to fly across the room.
 
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