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Pedersoli Kentucky Rifle Rust

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fishmusic

Always a Newbie
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I have a Pedersoli Kentucky Rifle flinter in .45 and have owed it for about 4 years. While I am a meticulous cleaner there are rust spots where the breech seals in the inside of the barrel. I noticed them while cleaning the gun after shooting. Naturally my concern is that eventually this will get to the threads of the breech but right now it is minor and I want to stop this before it gets worse. I have tried using steel wool on a jag but it doesn't get to the very edged where the rust shows up. My bore scope is cheap and doesn't have a way to capture pics or I would attach them.

Dare I drop some rust dissolver down there to get rid of it? I don't want to ruin the barrel. Any recommendations?
 
Ah, the joys of the patent breech. (not a fan). I have same rifle in .50. Employ a bore caliber breech scraper and sub-caliber brush to get into the breech channel followed by penetrating oil then repeat after a few days and see what comes out?

Rust is like cancer: if you don't get it early, you have a problem.
 
The rust is not in the chamber, it is where the breech meets the bore. I will take you advice about the scraper for that interface. I agree that the "patent breech" is a royal pain. This one is not unlike the CVA breeches where the touch hole liner is threaded into the breech plug. Removal and cleaning is not an option.
 
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