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04-04-2019, 08:41 AM
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I'm not sure they are Rich, but my 12ga. damascus barrels are not the standard .729 and I've wondered if the 20's were not standard either.
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Wag more- Bark less. |
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04-04-2019, 08:55 AM
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Twenty gauge nominal bore diameter is .615"
Admiral Thomas Perry's 20 gauge Damascus DH, a 1908 gun, bores measure .619" and .620" which seem just a whisker oversize, but who knows? I can very well imagine Parker Bros. may have polished or honed these bores... being Damascus they may have had minor imperfections after the first boring that may have needed a clean-up. In my experience in the field of Volvos a four-cylinder block would have been fitted with three "C" sized pistons and one "D" due to the fact that the fourth hole was bored with a cutter that had already cut three holes and was dulled to the point that the fourth hole (cylinder) needed extra honing, hence the one larger piston. .
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"I'm a Setter man. Not because I think they're better than the other breeds, but because I'm a romantic - stuck on tradition - and to me, a Setter just "belongs" in the grouse picture." George King, "That's Ruff", 2010 - a timeless classic. |
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| The Following 2 Users Say Thank You to Dean Romig For Your Post: |
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04-04-2019, 09:13 AM
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I think it was not uncommon for honing to be done on barrels back in the days of corrosive blackpowder and primers. Just a guess, I wasn't around then
 but can imagine "polishing" taking place.
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| The Following User Says Thank You to Robin Lewis For Your Post: |
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04-04-2019, 09:33 AM
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The bore diameters on Parkers vary over the years. They went back and forth on the oversized bore diameters over the years. It is not at all uncommon to find oversized bores prior to 1900.
I am sure that Daryl is looking for a comparison point with other guns.
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B. Dudley |
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| The Following 3 Users Say Thank You to Brian Dudley For Your Post: |
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04-04-2019, 10:03 AM
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1902 DH Damascus
r= .618 l= .615 |
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| The Following User Says Thank You to Jerry Harlow For Your Post: |
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04-04-2019, 03:26 PM
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I wish I had a 20 ga damascus gun to measure. :-(
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| The Following User Says Thank You to Jay Gardner For Your Post: |
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04-04-2019, 05:00 PM
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That's exactly what I'm looking for Brian. Keep them coming guys.
__________________
Wag more- Bark less. |
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04-04-2019, 06:28 PM
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Daryl there were very few Damascus 20ga hammerless guns made, only 15percent of the total of grades 2 to 5 or 427. I had my heart set on a Damascus 20 but they never seen to come up for sale. If u own a dam 20ga hold on to it with both hands.
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| The Following 3 Users Say Thank You to Craig Larter For Your Post: |
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