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 Post subject: Sears M200 12ga. Bolt/Slide problem
PostPosted: Tue Nov 24, 2009 1:16 am 
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Joined: Tue Nov 24, 2009 1:01 am
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Hello everyone, I am in need of some help. I am new to shotguns, as I am sure you will quickly see by my lack of proper vocabulary. I really enjoy the outdoors and have recently inherited a cheap Sears M200 12ga that I have great memories with from when I was a boy walking the fields with my Grandpa. I am very handy and have already disassembled and reassembled this gun trying to solve this problem (if you are familiar with this gun or the Winchester 1200, you know that's no real feat), so I think I can fix it myself with a little help.

The family member that handed it down to me said that when you fire the gun, the pump pops back, opening the bolt part way, which is of course very unsafe. They also said that it was shearing off a screw on the underside of the bolt assembly(?), which has been replaced, but the gun has not been fired since. I know the bolt-opening problem is still there, because if I pump the gun (unloaded) and dry-fire the gun, the bolt is immediately released and opens part way.

The bolt does rotate to lock into position as I believe it should when you pump the gun, but it prematurely unlocks immediately upon pulling the trigger. I can give further details if needed, and could post pictures if that would help. I'm sure most of you know, this is basically the same gun as a Winchester 1200, so anyone with experience with either may have valuable input.

I will, of course be safely test firing this gun after any repairs are made, and I would really like to work on this myself. Cash is short and this is no fancy gun to begin with, so I would really rather stay out of the gunsmith's shop.

Thanks for any help you can give!!


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 Post subject: Re: Sears M200 12ga. Bolt/Slide problem
PostPosted: Tue Nov 24, 2009 1:52 am 
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All pump guns I am familiar with unlock on the fall of the hammer. This is not a defect. When there is a live round in the gun and it is fired, recoil keeps the action shut until the shot is gone and the pressure has dropped. If I fire my Remington one handed it will even eject the empty shell.
I'm sorry, I'm no Winchester guy, and I can't help you with the screw shearing off. You might want to look here, as thay have a lot of parts and schematics of a lot of guns.
http://www.e-gunparts.com/

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 Post subject: Re: Sears M200 12ga. Bolt/Slide problem
PostPosted: Tue Nov 24, 2009 2:09 am 
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Joined: Tue Nov 24, 2009 1:01 am
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So maybe I have it wrong. I apologize that i don't have first hand experience with the problem, but the family member that passed it on says that even firmly holding the gun properly, the recoil blows the action open. So maybe it's not locking properly? I can see the bolt turning to lock into place when you slide the action closed, but maybe it's not locking all the way? Any thoughts?


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 Post subject: Re: Sears M200 12ga. Bolt/Slide problem
PostPosted: Tue Nov 24, 2009 2:38 am 
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The winchester 1200 pump guns had what is known as a cocking assist. The pump action/forearm coming back after you take a shot is normal to help you jack another round into the action faster.

Unlike a 870 action that you have manually pump the action back after firing the shot to unlock the action, the 1200 action unlocks once the shot if fired, allowing the fired shell to get the pump/forearm started back to make reloads even faster.

So, the gun is not broken, and what you are experiencing with it, is part of the gun design.


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 Post subject: Re: Sears M200 12ga. Bolt/Slide problem
PostPosted: Tue Nov 24, 2009 3:08 am 
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Joined: Tue Nov 24, 2009 1:01 am
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Well, maybe its not broken now that that screw has been replaced. This was very informative, and I think the gun is ready for a round of test fires. Like I said, I took it apart, and it seems to be working properly, based on what I'm reading here. I'll have to take it out to the field and let you know how it turns out.

Thanks for all the help!!


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 Post subject: Re: Sears M200 12ga. Bolt/Slide problem
PostPosted: Tue Nov 24, 2009 3:10 am 
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Joined: Tue Nov 24, 2009 1:01 am
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Anyone know where I can find the age for this gun? The model number is 273.2251, which I have only found to confirm that it was made by Win. The serial is P158898, but so far I have found no manufacture dating info out there.

Thanks!


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 Post subject: Re: Sears M200 12ga. Bolt/Slide problem
PostPosted: Tue Nov 24, 2009 10:01 am 
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Had a Ted Williams 200, a little fancier than the Sears 200 but the same gun; actually a Winchester 1200. It would do the same thing. Had an adjustable choke that I really liked; could really hit with that gun. Also fired many steel rounds in it with no problem; mod or more open. Grand son in law has it now and the bore is still pristine.

Mine was made in about 1966.

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 Post subject: Re: Sears M200 12ga. Bolt/Slide problem
PostPosted: Tue Nov 24, 2009 2:08 pm 
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Joined: Mon Apr 06, 2009 1:55 pm
Posts: 92
Although the Winchester 1200 / Sear 200 does not have the best reputation for reliability it is one of the slickest pumps of all time, which seems to have confused your relatives into thinking there is a problem with the gun. Don't feel bad, my relatives are confused much worse than that! The only screw I can think of would be the one that attaches the bolt assembly to the slide assembly. It could have loosened and then sheared. I would shoot it and watch the bolt for signs of stress.


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