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Rifles, Reloading, Optics, Equipment
Reloading
Bullet Weld
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<blockquote data-quote="Doom2" data-source="post: 2550806" data-attributes="member: 108323"><p>Without a metallurgical analysis we can't entirely rule out that cold welding isn't happening. My only experience with it was with copper wiring and it was a demonstration. I have to admit I was not aware that alloys could be welded this way. I don't think it is happening because I don't believe that the amount of neck tension is sufficient to make it happen.</p><p></p><p>Based on what I have read about this issue it does seem most prevalent when wet tumbling with SS pins and when cleaning in an ultrasonic cleaner, both of which result in extremely clean brass. Cleaning with SS pin will definitely remove the oxide coating and ultrasonic can also. It also seems that dirty necks or lubed necks don't seem to suffer the problem. </p><p></p><p>As for new brass, freshly processed brass may not have had enough time to form an oxide coating but that's a bit of a guess. Hard to believe that Lapua brass would have this issue. </p><p></p><p>So what do we do? Guess I need to find some graphite!</p></blockquote><p></p>
[QUOTE="Doom2, post: 2550806, member: 108323"] Without a metallurgical analysis we can’t entirely rule out that cold welding isn’t happening. My only experience with it was with copper wiring and it was a demonstration. I have to admit I was not aware that alloys could be welded this way. I don’t think it is happening because I don’t believe that the amount of neck tension is sufficient to make it happen. Based on what I have read about this issue it does seem most prevalent when wet tumbling with SS pins and when cleaning in an ultrasonic cleaner, both of which result in extremely clean brass. Cleaning with SS pin will definitely remove the oxide coating and ultrasonic can also. It also seems that dirty necks or lubed necks don’t seem to suffer the problem. As for new brass, freshly processed brass may not have had enough time to form an oxide coating but that’s a bit of a guess. Hard to believe that Lapua brass would have this issue. So what do we do? Guess I need to find some graphite! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Bullet Weld
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