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QUESTION ON PROOF STAMPING ON FRANCOTTE HAMMERGUN
Unread 04-08-2024, 05:42 PM   #1
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Bob Jurewicz
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Default QUESTION ON PROOF STAMPING ON FRANCOTTE HAMMERGUN

Here is a picture of the barrel flats on a 1911 A Francote 12 GA Hammergun.
Anyone know the meaning of the D=65 divided by 20.6 m/m?
Bob Jurewicz
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Unread 04-08-2024, 06:52 PM   #2
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David C Porter
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65mm= 2 1/2" or 2 9/16" chamber lenght.
20.6MM= Chamber ID, .811"

Chamber dimensions in millimeters shotguns undergoing smokeless proof. Length of chamber over diameter of chamber
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Unread 04-08-2024, 07:53 PM   #3
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Thank you David!
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Unread 04-09-2024, 01:52 PM   #4
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Hi Bob - I sent you a PM.

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