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Joined: Feb 2003
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Sidelock
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Sidelock
Joined: Feb 2003
Posts: 1,624 Likes: 13 |
I have what was once a nice provincial English Boxlock (Damascus). Barrels started life as 2 1/2" but were lengthened to 3" (not a misprint). Is it feasible to sleeve the chambers to 2 3/4? Thank you, Gil
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Joined: Mar 2009
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Sidelock
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Sidelock
Joined: Mar 2009
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Yes, although typically it is done to reduce gauge, not sustain the current gauge, but before you do get the wall thickness measured by someone who knows barrels. Depending on the original wall thickness and how was removed you may or may not have a problem
Depending on who you reference a good working rule for wall thickness min wall at the end of the chamber varies but .105 is good, with the walls narrowing down to .045 nine inches from the breech. If you have more than.105 at the end of the 2 1/2 original and down through the end of the 3 inch chamber you maybe ok. C.I.P calls for lower minimums, but it becomes a mental confidence issue for some to get too close to the edge.
Last edited by old colonel; 04/23/20 07:05 PM. Reason: Reworded to clarify
Michael Dittamo Topeka, KS
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Joined: Dec 2011
Posts: 908 Likes: 43
Sidelock
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Sidelock
Joined: Dec 2011
Posts: 908 Likes: 43 |
Measure the wall thickness. May still be thick enough to use lower pressure shells. If you sell it, let the buyer know.
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Joined: Dec 2001
Posts: 6,993 Likes: 402
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 6,993 Likes: 402 |
It is done in the same gauge sometimes to repair a damaged chamber. I have a pretty nice boxlock that has had the chambers sleeved, I assume to repair pitting but it is hard to tell. Still has 2&1/2" chambers.
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Sidelock
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Sidelock
Joined: Nov 2006
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Joined: Mar 2009
Posts: 2,018 Likes: 50
Sidelock
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Sidelock
Joined: Mar 2009
Posts: 2,018 Likes: 50 |
It is done in the same gauge sometimes to repair a damaged chamber. I have a pretty nice boxlock that has had the chambers sleeved, I assume to repair pitting but it is hard to tell. Still has 2&1/2" chambers. In order to replace lost or damaged steel with quality new steel. It allows for the removal of pits then replaces that steel removed to ensure continued safe minimum wall thickness.
Michael Dittamo Topeka, KS
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Joined: Jan 2006
Posts: 9,417 Likes: 314
Sidelock
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Sidelock
Joined: Jan 2006
Posts: 9,417 Likes: 314 |
Why? This may be next 16g No. 0 L.C. Smith with chamber lengthened to 2 7/8" Radiograph with the bulge and thin wall or even worse, courtesy of Randy McCune; chamber also inexpertly lengthened to 2 7/8" and forcing cone lengthened. I don't unfortunately have the end-of-chamber wall thickness and the reload also showed evidence of over-pressure Briley's same gauge chamber sleeving is $275 http://www.brileygunsmithing.com/c-879-full-list-of-shotgun-gunsmithing-pricing.aspx
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Joined: Jan 2002
Posts: 11,377 Likes: 105
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 11,377 Likes: 105 |
I have what was once a nice provincial English Boxlock (Damascus). Barrels started life as 2 1/2" but were lengthened to 3" (not a misprint). Is it feasible to sleeve the chambers to 2 3/4? Thank you, Gil I recently owned a Brit hammer 20ga, original 2 1/2", lengthened to 3". But it had the correct British reproof. I thought it odd that someone had the chamber lengthened to 3". But given the reproof, I didn't worry about it. Without a reproof, I'd worry a lot.
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Joined: Nov 2006
Posts: 610
Sidelock
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Sidelock
Joined: Nov 2006
Posts: 610 |
My question was to Gil and was why he wanted a chamber sleeve down to 2 3/4” Not why the barrels needed to be measured
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