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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bartlein Press Release - New Barrel Material
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<blockquote data-quote="J E Custom" data-source="post: 1952857" data-attributes="member: 2736"><p>If your guy is wearing out his barrels @.007 to .008 Thousandths per 100 rounds he is shooting Cratex bullets or powder laced with Valve grinding compound. Normal wear is much less than that and setting the chamber back to clean up the lands and leads normally only needs to be done once in the life of a barrel, and then It is only .010 + after thousands of rounds.</p><p></p><p>There is no doubt that tougher materials are available but tougher materials are also harder to machine, so the quality/accuracy Is the first thing to suffer. The factories can buy and use Million dollar machines and high priced tooling that can deal with some of these problems, but machine-ability is still a factor in the accuracy of all components, and has to be considered. they normally compensate this with higher cost to the customer.</p><p></p><p>I have saved many barrels that were shot out by simply setting the shoulder back one thread. The only reason for one thread was to bring the barrel ID back to the original position and freshen the entire chamber, shoulder, neck, freebore,throat and lead. This also resets the head space and squares any ligament surfaces. Barrels of the machinable steels that have traditionally shoot very well have proven the setting the barrel back would return it to it's old accuracy.</p><p></p><p>Re doing the harder alloys and coated barrels have proven not to respond to re chamber very well and results were less than favorable. </p><p></p><p>I am all for materials that will improve the longevity of barrels, but most barrels that are not abused and are taken care of will last a long time.</p><p></p><p>Just my opinion based on my experiences with barrel steels.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1952857, member: 2736"] If your guy is wearing out his barrels @.007 to .008 Thousandths per 100 rounds he is shooting Cratex bullets or powder laced with Valve grinding compound. Normal wear is much less than that and setting the chamber back to clean up the lands and leads normally only needs to be done once in the life of a barrel, and then It is only .010 + after thousands of rounds. There is no doubt that tougher materials are available but tougher materials are also harder to machine, so the quality/accuracy Is the first thing to suffer. The factories can buy and use Million dollar machines and high priced tooling that can deal with some of these problems, but machine-ability is still a factor in the accuracy of all components, and has to be considered. they normally compensate this with higher cost to the customer. I have saved many barrels that were shot out by simply setting the shoulder back one thread. The only reason for one thread was to bring the barrel ID back to the original position and freshen the entire chamber, shoulder, neck, freebore,throat and lead. This also resets the head space and squares any ligament surfaces. Barrels of the machinable steels that have traditionally shoot very well have proven the setting the barrel back would return it to it's old accuracy. Re doing the harder alloys and coated barrels have proven not to respond to re chamber very well and results were less than favorable. I am all for materials that will improve the longevity of barrels, but most barrels that are not abused and are taken care of will last a long time. Just my opinion based on my experiences with barrel steels. J E CUSTOM [/QUOTE]
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Bartlein Press Release - New Barrel Material
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