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This gun was apparently re proofed to European standards - 65 mm = 2.56 inch, 70mm = 2.76 inch. A 2 5/8 inch chamber would have to be proofed at 65 mm.
Best, Austin
The Following 2 Users Say Thank You to Austin W Hogan For Your Post:
2 5/8 Chambers for 2 1/2 inch shells
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