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Rifles, Reloading, Optics, Equipment
Reloading
Occasional cleaning incompatible with precision reloading?
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<blockquote data-quote="MagnumManiac" data-source="post: 2201877" data-attributes="member: 10755"><p>A dark patch, even slightly grey, can be a hint of carbon picked up at the throat and end of chamber.</p><p>If your barrel is a Bartlein, then it is lapped before it leaves the factory. They all are.</p><p>I have had similar results on a lapped barrel, patches run down it discolour, but it is an even colour over the entire patch.</p><p>My patches are generally tight enough that they will actually squeak when run dry.</p><p>Even if I run a soaked patch with JB, run it until it is black with several passes, then follow with dry patches I can get a dark patch like you describe. I take this as the chamber may have a carbon ring or the neck area of the chamber is dirty.</p><p>But even after cleaning those areas with a carbon cleaner I can still get a dark patch, so I don't really sweat it too much.</p><p>Like I said, I only clean to bare metal to see how much throat erosion is going on and whether I need a set-back and re-chamber.</p><p>I clean my hunting rifles, whether custom or not, only when they need it.</p><p>If a rifle is abused, by this I mean shot fast with long periods of rapid fire, the haze cracking in the steel is full of carbon, this will also show up on a patch and can't be completely removed.</p><p>Anyway, I wouldn't sweat the grey patch too much, black patches indicate carbon that is stubborn in my experience.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2201877, member: 10755"] A dark patch, even slightly grey, can be a hint of carbon picked up at the throat and end of chamber. If your barrel is a Bartlein, then it is lapped before it leaves the factory. They all are. I have had similar results on a lapped barrel, patches run down it discolour, but it is an even colour over the entire patch. My patches are generally tight enough that they will actually squeak when run dry. Even if I run a soaked patch with JB, run it until it is black with several passes, then follow with dry patches I can get a dark patch like you describe. I take this as the chamber may have a carbon ring or the neck area of the chamber is dirty. But even after cleaning those areas with a carbon cleaner I can still get a dark patch, so I don’t really sweat it too much. Like I said, I only clean to bare metal to see how much throat erosion is going on and whether I need a set-back and re-chamber. I clean my hunting rifles, whether custom or not, only when they need it. If a rifle is abused, by this I mean shot fast with long periods of rapid fire, the haze cracking in the steel is full of carbon, this will also show up on a patch and can’t be completely removed. Anyway, I wouldn’t sweat the grey patch too much, black patches indicate carbon that is stubborn in my experience. Cheers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Occasional cleaning incompatible with precision reloading?
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