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Weatherby Vanguard troubleshooting
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<blockquote data-quote="longrangehunterII" data-source="post: 1020984" data-attributes="member: 61185"><p>You'll need to allow the barrel to cool completely after 3 shots. The 300 Weatherby is a Hot round, and the barrel you have is rather thin, which will heat up a lot causing the rounds to walk.</p><p></p><p>From your prior cleaning routine I bet you left most of the fouling in the barrel. Factory barrels are hard to clean throughly in the first place, and since you only cleaned it after every 3rd trip from the range and 45 rounds down the tube you more then likely where leaving behind a lot of fouling. </p><p></p><p>You'll need to think of it like this, powder residue in the form of carbon with copper laid over each round as you fire. It needs to come off in layers, and isn't a quick job unless you have a custom barrel. It takes a long time and is work removing that much fouling left behind over so many years.</p><p></p><p>Question? Did you use a good bore cleaner like Shooters Choice between cleaning with the JB Bore Compound? Where you able to easily move the cleaning rod back and forth in the bore after cleaning? Did any patches come back out blue after being left in the bore for 10-15 minutes after using the JB Compound?</p><p></p><p>There's a product called Chameleon Gel made by BoreTech that is a color indicating cleaner and polish that if you have any fouling left it will turn a certain color for what's left in the barrel; blue/green-copper; black-carbon; gray-lead/moly; white-clean bore. This would help if you're not sure.</p><p></p><p>You'll need to test with a known load that was accurate, as well as check your scope, but from the sound of it I'd say a proper cleaning should bring it back?</p></blockquote><p></p>
[QUOTE="longrangehunterII, post: 1020984, member: 61185"] You'll need to allow the barrel to cool completely after 3 shots. The 300 Weatherby is a Hot round, and the barrel you have is rather thin, which will heat up a lot causing the rounds to walk. From your prior cleaning routine I bet you left most of the fouling in the barrel. Factory barrels are hard to clean throughly in the first place, and since you only cleaned it after every 3rd trip from the range and 45 rounds down the tube you more then likely where leaving behind a lot of fouling. You'll need to think of it like this, powder residue in the form of carbon with copper laid over each round as you fire. It needs to come off in layers, and isn't a quick job unless you have a custom barrel. It takes a long time and is work removing that much fouling left behind over so many years. Question? Did you use a good bore cleaner like Shooters Choice between cleaning with the JB Bore Compound? Where you able to easily move the cleaning rod back and forth in the bore after cleaning? Did any patches come back out blue after being left in the bore for 10-15 minutes after using the JB Compound? There's a product called Chameleon Gel made by BoreTech that is a color indicating cleaner and polish that if you have any fouling left it will turn a certain color for what's left in the barrel; blue/green-copper; black-carbon; gray-lead/moly; white-clean bore. This would help if you're not sure. You'll need to test with a known load that was accurate, as well as check your scope, but from the sound of it I'd say a proper cleaning should bring it back? [/QUOTE]
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