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Bore condition

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Joined
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Hello all,

Borescope picture of a .35 caliber percussion barrel breech area attached. Anyone have an opinion on the apparent fissure or crack at the 4 o'clock position? The muzzle end is very clean with good rifling, it's only the breech that shows a lack of rifling and the possible crack. Not sure if this defect is in parent metal or a fissure in fouling or rust scale buildup. The barrel shows no external signs of distress and appears to be machined steel not wrought iron. It is marked "TRYON" on a lower barrel flat. I don't have enough experience in muzzleloading firearms to know if lengthwise barrel cracks are a real possibility.

The rifle is a mid 1800s half stock and is in very good condition other than this so I would like to make a determination on it's shootability. Perhaps a re-bore to .40 caliber, if only a scale buildup. Or a barrel replacement keeping the old one a part of the rifle's history. Any advice?

Thanks
 

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  • 35 caliber breech.jpg
    35 caliber breech.jpg
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  • Squirrel Rifle (1).jpeg
    Squirrel Rifle (1).jpeg
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