Model 12 ejecting problem

peterf

peterf

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Wyevale, Ontario
I have a Model 12 with issues that I hope someone here can help me with. I bought this gun at an auction a couple of years ago and only recently fired it. It turns out that after being fired it is super hard to eject the empty. I actually had to jam the stock into the ground while holding only the forend for it to cycle.
I thought it might be a dirty chamber so I cleaned it thoroughly but there was no change when I fired it. It cycles fine with snap caps.
Any ideas would be appreciated.

Pete
 
What shells are you using?
Cheap stamped metal bases (low) might be the issue.
Swelling after firing, low base for the extractor to grab when the attempt is made to eject.
Just a few bits of the puzzle to be asked.
Rob
 
peterf said:
I have a Model 12 with issues that I hope someone here can help me with. I bought this gun at an auction a couple of years ago and only recently fired it. It turns out that after being fired it is super hard to eject the empty. I actually had to jam the stock into the ground while holding only the forend for it to cycle.
I thought it might be a dirty chamber so I cleaned it thoroughly but there was no change when I fired it. It cycles fine with snap caps.
Any ideas would be appreciated.

Pete
Click to expand...

Peter: I suspect the ejection problem may very well be the "Chamber Ring". . The chamber ring is what creates the headspace with Model 12's. . In other words it's what the shell rim rests on when the bolt is closed. . If the chamber ring has a slightly smaller diameter than the chamber, ejection will be difficult or some cases near impossible. .

Without getting into the possible reasons for the chamber ring having less diameter than the chamber you can do a quick check by opening the action and running your finger in the chamber. You should not be able to feel a ridge from the chamber ring and if you do the brass on the fired shell is expanding inside the chamber and the chamber ring is preventing ejection, basically chokes the brass.

If the chamber ring is your problem you can take the gun down and hone the chamber ring to the correct size. . if your not comfortable doing this, then take it to a gunsmith who is.

If you click on post #4 and scroll down to the schematic; it's part #5 . "barrel chamber ring" . . The chamber ring does not fit into the barrel but fits into the receiver and when assembled, with the barrel assy, mates up with the chamber in the barrel creating the full length of the chamber.
 
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Can't say much to help you except for my dad had a heavy duck model that you could not pump to save your soul after firing. He had it to 2 smiths after trying a few things on his own. One replaced that ring in the chamber and I can't remember what the other one tried but it never did get fixed while he owned it. And he wasn't using cheap shells.
 
I will assure you the problem is the cheap Winchester ammo. As previously stated the chamber ring system in the model 12 does not like certain steel headed cartridges. The cheap Winchester stuff is at the top of the list. Try some different ammo I think it will improve.
Darryl
 
The problem is it is a model 12 with the DOG LEG action arm they changed the style for a few yrs the action would lock up tight when fired . It is not the chamber ring or anything else mentioned I have worked on and shot 100''s thousands of rounds through model 12 's and have never changed a chamber ring due not let anyone touch the chamber ring or u will have a probl besides you du not just change a chamber ring they came over size and you need a special tool fr winchester to re -cut the ring . Back to the problem when look at the action arm where it meets the forearm wood if slide arm has a bend in it at the wood end that is your problem pot a pic of possible or send me a pic
 
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