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03-25-2019, 03:45 PM | #3 | ||||||
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While you have plenty wall thickness on those barrels , I think , but do not know, that they have been honed some. The standard bore ID would be .730. I often see .040 or greater on a 2 frame 12.
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03-25-2019, 03:54 PM | #4 | ||||||
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I would like to have a little more meat on the tubes than .027" when we are talking about shooting Damascus barrels. But that's just me. I too suspect these tubes have been thinned from honing since leaving the factory.
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03-25-2019, 03:59 PM | #5 | ||||||
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At 9" from the breech I want .040, .030 at 9" is thin IMHO.
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03-25-2019, 04:16 PM | #6 | ||||||
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You didn't mention the bore diameters, very important. It is unusual for the outside to be honed, more common to see the bores enlarged. The serial number range also indicates the original bore diameters, early guns often larger bore diameter. The seller could have measured the wall thickness incorrectly and everything could be factory original. You are the final judge of wall thickness. Why would he mention the wall thickness without telling you the bore diameter? Don't give up yet.
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03-25-2019, 04:34 PM | #7 | ||||||
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A sample of 12g barrels I have measured
1903 Parker Grade 3 2 frame with D4 damascus 9" from breech L & R .045 1913 Sterlingworth 9” from breech L .040 / R .045 1903 Smith 00 9” from breech L .048 / R .049 1906 Smith 00 9” from breech L .044 / R .053 1929 Smith Field 9” from breech L .043 / R .045 1905 Remington 1894 A Damascus 9” from breech L .060 / R .058 The end of the chamber wall thickness is even more critical. Lots of numbers here http://www.doublegunshop.com/forums/...=379803&page=3 .025 MWT refers to the distal 1/3 of the barrel; usually reported both 9" from the muzzle and MWT location. Factory small bores may have MWT of .020".
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http://sites.google.com/a/damascuskn...e.com/www/home Last edited by Drew Hause; 03-25-2019 at 04:50 PM.. |
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03-25-2019, 05:47 PM | #8 | ||||||
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Murph has hit the nail on the head. Bore diameter is where I always start and to me the most important.
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Wag more- Bark less. |
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03-25-2019, 07:36 PM | #9 | ||||||
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The measurement for this DH is as follows for the right barrel. Mid of barrel is .038,.038 and .030. For left barrel mid is .037, .038 and .032. The bore measurement is .735. Any further thoughts?
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Neill M. McInnis |
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03-26-2019, 07:35 AM | #10 | ||||||
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1. What is the chamber length?
2. What is the end of chamber wall thickness? 3. What is the length of the forcing cone ie. have the cones been lengthening? 4. What is the bore at 9"? The barrels have been inexpertly honed, and the 9" wall thickness is inadequate, esp. for pattern welded barrels. If you wish to use the gun, it should be with sub-gauge tubes.
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