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11-02-2020, 09:02 PM | #3 | ||||||
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Thanks for the reply! I too kind of doubt it's original 3" chambers. I have a return privilege yet I'm going to see if the seller will let me hold onto it until I get my research letter. I did search this forum and found references to chamber end wall thickness at the forcing cone juncture listed in the range of .080"-.100" as typical for vintage doubles.
Does anyone here have a letter confirmed factory 3" Parker that they could measure the wall thickness of the chamber end/forcing cone juncture? |
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11-02-2020, 10:31 PM | #4 | ||||||
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From the get go, Parker Bros. would chamber a gun for whatever length cartridge the customer ordered. In theory if the customer requested a gun be chambered for 3-inch shells, the chamber would in fact be 2 7/8 inch.
Three-inch and even 3 1/4 inch 12-gauge shells were available from our North American ammunition manufacturers virtually from the beginning of factory loaded shot shells. They didn't offer heavier loads than one could get in the 2 3/4 inch shell, the advantage which many gun cranks believed in was more/better wadding. The heaviest 12-gauge loads offered back in the day were 3 1/2 drams of bulk smokeless powder or 28-grains of dense smokeless powder such as Infallible or Ballistite pushing 1 1/4 ounce of shot. Here is such a load in 3-inch Winchester LEADER cases marked as Fred Gilbert's Live Bird load by Von Lengerke & Antoine -- Fred Gilbert Winchester Leaders.jpg And in a 2 7/8 inch Western Cartridge Co. RECORD case -- RECORD 12-gauge 2 7-8 inch #7 chilled.jpg In a Remington ARROW 2 3/4 inch case with 28 grains of Ballistite -- ARROW 12-gauge 28-grains Ballistite, Remington Arms Co., Inc..jpg These loads are said to be a bit higher pressure than today's SAAMI specs. The 12-gauge 3-inch progressive burning powder load with 1 3/8 ounce of shot was introduced in the 1924/5 time frame by Western Cartridge Co. put up in their RECORD case. 12-gauge RECORD 3-inch Super-X two piece.jpg The 12-gauge 3-inch Magnum with 1 5/8 ounce of shot was introduced in 1935 along with Winchester's Model 12 Heavy Duck -- RECORD Super-X 12-gauge 3-inch Magnum.jpg LEADER SUPER-SPEED 12-gauge 3-inch 1 5-8 ounce #5.jpg |
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11-02-2020, 10:51 PM | #5 | ||||||
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Thanks Dave.
I would think if the subject gun was ordered with 3” chambers intended for shells somewhat longer than 3” the factory records and the research letter would address the order. .
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11-03-2020, 10:38 AM | #6 | ||||||
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Jeffery: I believe you have misinterpreted the wall thickness threads.
Lot of information here http://www.doublegunshop.com/forums/...=379803&page=3 An end-of-the-chamber wall thickness of .080" would NOT be factory original in a 2 Frame, nor even in a light weight British game gun 12b.
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11-03-2020, 03:13 PM | #7 | ||||||
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Drew, thanks, your chart is the one I was thinking of, showing a range (in 12 gauge) from .086" for a Parker VH to .118" for a LC Smith. The only other Parker I have measured at .093" It's a 12 gauge 2 5/8" chambers, 28", 1 1/2 frame, 1929 VH, with barrels stamped "3 - 6". The VH is original finish, original bores, I think. I was wondering what your thoughts of this GHE measuring at .096" are. Unlikely to be original or hard to say? I mailed in my request for a research letter today, by the way.
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11-03-2020, 03:31 PM | #8 | ||||||
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How long are the forcing cones Jeffery? They were originally likely 1/2" to 5/8".
If longer, when they were lengthening the chamber may have been lengthened another 3/8"; from 2 5/8". I have a L.C. Smith with long cones and non-original 3 1/4" chambers still with end-of-the-chamber WT of .112" and .118". I don't believe a 2 frame Parker would have end-of-the-chamber WT of .096". But assuming the barrels are Parker Special Steel, I would be comfortable using 1 1/8 oz. at 1200 fps target loads in the gun.
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11-03-2020, 04:47 PM | #9 | ||||||
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The forcing cones look short, Drew, although I haven't measured them yet, I will tonight. I'll also take a measurement at 2 5/8" from the breech to get a hypothetical wall thickness with standard chambers.
Does anyone have a end of chamber wall thickness measurement for a number 2 Parker for comparison? Best of all would be if someone happened to have measurement on a 3" chamber gun that letters. |
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11-03-2020, 05:49 PM | #10 | ||||||
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Jeffrey, I have a DH 12 circa 1902 that has 30" Damascus barrels and factory 3" chambers. The research letter states that it was ordered with 3" chambers, and that the chambers are listed as 2 7/8".
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