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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Copper in the 300 RUM
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<blockquote data-quote="demarpaint" data-source="post: 67578" data-attributes="member: 655"><p>It's hard to say how many JB passes it will take to clear up the problem. I was never a big fan of breaking in a factory barrel by the book. I would clean the barrel when I first got the rifle before a shot was ever fired. Then I would run a patch of Kroil down the barrel, patch it out and shoot a 5 shot group. Do the same thing again. After that I would shoot and clean at the end of the session. My Savage was badly copper fouled so I did the JB polishing. </p><p></p><p>Varmint Hunter brought out a good point, change the patch a few times if needed. I think I would start with the 50 stroke procedure, take it to the range and see if it makes a difference, you can always do it again. The barrel will tell you when its broken in. Some barrels just foul badly, and might need another 50 or more passes, others might need the Tubb fire lapping kit (I never used it). </p><p></p><p>Just think of the perfect excuse you have to justify a custom barrel, if you are still unhappy with the amount of fouling after the JB polishing. /ubbthreads/images/graemlins/grin.gif </p><p></p><p></p><p></p><p>Frank D</p></blockquote><p></p>
[QUOTE="demarpaint, post: 67578, member: 655"] It's hard to say how many JB passes it will take to clear up the problem. I was never a big fan of breaking in a factory barrel by the book. I would clean the barrel when I first got the rifle before a shot was ever fired. Then I would run a patch of Kroil down the barrel, patch it out and shoot a 5 shot group. Do the same thing again. After that I would shoot and clean at the end of the session. My Savage was badly copper fouled so I did the JB polishing. Varmint Hunter brought out a good point, change the patch a few times if needed. I think I would start with the 50 stroke procedure, take it to the range and see if it makes a difference, you can always do it again. The barrel will tell you when its broken in. Some barrels just foul badly, and might need another 50 or more passes, others might need the Tubb fire lapping kit (I never used it). Just think of the perfect excuse you have to justify a custom barrel, if you are still unhappy with the amount of fouling after the JB polishing. [img]/ubbthreads/images/graemlins/grin.gif[/img] Frank D [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Copper in the 300 RUM
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