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Stevens 520 shell stop jam

stevens 520 shotgun jam

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#1 georef

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Posted 12 January 2020 - 09:52 PM

Good evening all,

 

I'm trying to get my great grandfathers Westernfield 36 (Stevens 520) back into action and fully functional. It was passed down to me recently and has largely sat under a bed for what I would guess at least the last 40-50 years. Doing some googling leads me to believe it was manufactured in 38-39 (https://www.gunvalue...guide-2617.html)

 

After a thorough once over and cleaning (im talking pins and springs, this thing was gunky!) there is nearly no rust, and she is smooth as glass after nearly a century of use (im told many Michigan white-tail and pheasant met their end to this old girl).

 

Forgive my poor cell phone pictures

 

full view.jpg
 
My problems started at the first trip out to the range. When going to rack the slide, ive noticed that the next shell has skipped over the shell stop and jammed the action, this is entirely from the recoil, not racking the slide:
 
jammed position.jpg

 

The normal shell position for proper feeding function is this(I assume):

 

normal position.jpg
 
In taking things apart, my first thought was that the slide (https://www.gunparts...oducts/1032990A) was worn down, allowing the shell to skip over the "shell stop". I ordered a new slide from numrich, and sure enough the new piece looked far less worn on the front end:
 
(new part is on the bottom, notice the harder angle at the end of the little shell catch ramp)
slides.jpg

 

Thinking I had this thing figured out, I went back to the range today only to have the same issue. Once every 15-20 rounds the shell will skip over the little stop on the slide and jam things up. Im shooting #8 2 3/4 shot, nothing fancy, factory shells. While this is a cherished family heirloom, its always been a working shotgun, and I would like to take it out a few times a year hunting small game, maybe turkey, etc. But I dont want to if I cant count on a follow up shot.

 

Any thoughts? I appreciate any insights you might have!

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#2 jim c 351

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Posted 13 January 2020 - 03:57 PM

Georef,

I would have done the same as you , surprised it didn't work.

Did you try other brands of ammo. It may be as simple as switching ammo.

It looks like you were testing with a brand of all plastic ammo. I just trashed 200 all plastic empties because they wouldn't work in my loading machine.

Jim C


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#3 georef

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Posted 13 January 2020 - 10:41 PM

Georef,

I would have done the same as you , surprised it didn't work.

Did you try other brands of ammo. It may be as simple as switching ammo.

It looks like you were testing with a brand of all plastic ammo. I just trashed 200 all plastic empties because they wouldn't work in my loading machine.

Jim C


Hey Jim, thanks for the reply.

 

The ammo in the picture above is actually just a 12ga snap cap I was using to show the position. The gun has jammed on 2 or 3 common 12ga trap loads.

 

Since I have 2 slides now that both seem to malfunction. I am thinking I might weld (aka a friend who is handy with a welder  :D) up the little catch on one of them and add a few mm, keeping the shape and angle as much as possible.

 

I assume that these guns weren't always this finicky, and that its just a case of probably more than one worn out part.


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#4 jim c 351

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Posted 14 January 2020 - 07:50 AM

Well best of luck, but its hard to imagine a brass rim causing that much wear, especially on a field gun.

Your gun probably hasn't been shot as much as a trap gun on one weekend.

Jim C


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