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Rifles, Reloading, Optics, Equipment
Reloading
Couple questions on bullet weld
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<blockquote data-quote="MagnumManiac" data-source="post: 2422407" data-attributes="member: 10755"><p>I have had this happen without any corrosion present.</p><p>Brass and copper based building metal are in fact different enough to cause electrolysis due to the zinc content of brass.</p><p>When brass is annealed, the gases between the grain crystals escape, this is most likely where the zinc is formed on the surface.</p><p>While annealing, that orange hue in the flame just as the correct temp is reached are the gases coming from the brass.</p><p>I annealed metals as a job, each different metal has a particular coloured hue when annealing. A gas spectrometer also does a similar thing, it shows up on a graph with different colours for each element found.</p><p>Anyway, whether it's caused by powder residue, electrolysis or something else, graphite powder brushed on the insides of necks works to stop it.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2422407, member: 10755"] I have had this happen without any corrosion present. Brass and copper based building metal are in fact different enough to cause electrolysis due to the zinc content of brass. When brass is annealed, the gases between the grain crystals escape, this is most likely where the zinc is formed on the surface. While annealing, that orange hue in the flame just as the correct temp is reached are the gases coming from the brass. I annealed metals as a job, each different metal has a particular coloured hue when annealing. A gas spectrometer also does a similar thing, it shows up on a graph with different colours for each element found. Anyway, whether it’s caused by powder residue, electrolysis or something else, graphite powder brushed on the insides of necks works to stop it. Cheers. [/QUOTE]
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Couple questions on bullet weld
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