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LetFly Offline OP
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Joe, I can afford to spend on a quality repair for one barrel as I do not have anything in the gun. But only if such repair would be lasting. Also the threads for the screw are cut into the opposing outside edges of the barrel contours under the rib. This does not seem safe to me. Thoughts?

Anyone use a high end adhesive to secure the rib? I have read about this idea using super strong mixes such as used in aero space. Could be applied to the 32" barrel as a test.

Last edited by LetFly; 09/13/21 07:37 AM.
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LetFly Offline OP
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I am curious to understand why the damage is the same on both barrels. Both have separation of the locking extension from the barrels. Lumps are solid as are the remaining rib-barrel weld. I own Remington, Lefever, Parker, Fox, and many JP Sauer from the same vintage. None show this type of weakness in the rib extension. Weak solder at the factory perhaps? Or digesting high pressure modern smokeless loads?

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Your Ithaca is the only gun that I have run into that has a single one piece rib soft soldered its entire length. All the others have a short rib at the breech usually brazed on. Hell usually freezes over before they turn lose.


Everybody Is ignorant, only on different subjects. —Will Rogers
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mc Offline
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I have done a complete relaying of the ribs on a Ithaca shotgun with the rib extension it was the first ithaca I did at trinidad it was tinned with no brazing it is a flues I think but the same idea its a big job

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mc Offline
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I don't know if you can solder a screw in to the screw hole under the rib the do a relay of the ribs I don't know if you could get it clean enough to just repair the part that has lift up .epoxy. Will just give you something else to cleanup when it fails .it can be repaired but it's an expensive proposition.good luck

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LetFly Offline OP
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Thank you for your insight. Very much appreciated. I have talked this over with my gunsmith and the Ithaca with both barrels is on its way to be inspected and repaired. More photos when it comes back.

The real puzzle is not the screw fix but why the gun engineers/makers at Ithaca would add a locking rib extension, creating the "Lewis" model, modifying the Crass model and in doing so specifying the locking extension and sighting rib as one piece. From my reading and understanding this most likely has the rib with its extension silver soldered on to the barrel assembly, a rather weak joint, rather than brazed soldered, a much stronger joint. Hence, both barrels suffering the same failure.

[Linked Image from jpgbox.com]

[Linked Image from jpgbox.com]

Last edited by LetFly; 09/15/21 06:31 PM.
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I have a Lewis 12 and a Lewis 16 and neither has the rib problem you show. I can only guess as to what made the rib separate on both sets of barrels. The only thing they have in common is the receiver they attach to . Maybe its a receiver problem? If those screws were down the bore a few more inches I would worry about their cutting into the barrel wall, but where they are the walls are about 150 thousandths so probably not a factor. Field grade Lewis models rarely pay for themselves except in the enjoyment of shooting. Best.

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LetFly Offline OP
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Gun is off to my gunsmith for examination and proper repair on barrels. He thought the same as you on the frame. Both barrels are on face with proper breech and water table clearances. Me, I think they used heavy duck loads until the solder gave way and the switched barrels. I will let you know when I get it back.

Last edited by LetFly; 09/28/21 08:32 PM.
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Looks like a weak design and a long ago repair solution. The screws look repurposed as on was engraved and the other not. A partial rib resolder might be a decent stopgap repair short of a total run relay job. Just ends up a question of cost, reward and expected life if repair. But any soft solder repair will still be a weak system like the original.

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