Reply to Thread

Message

<blockquote data-quote="Shadowrider" data-source="post: 2771643" data-attributes="member: 3099">That&#039;s exactly what it is.&nbsp; Where you went off the rails, so to speak, is with the dissimilar metals.&nbsp; The cartridge case is brass, the plating or bullet jacket is copper.&nbsp; Well brass is comprised of 70% copper so it&#039;s not very different at all.&nbsp; The other component of brass is zinc and that&#039;s interesting.&nbsp; I&#039;m wondering if wet stainless pin tumbling could be the precursor to the process.&nbsp; Because I know for a fact that some of the chemicals added for cleaning (dawn and lemishine) and chemicals in tap water (chlorine, fluoride, minerals) will dezinc brass especially when combined with heat (drying in an oven ain&#039;t good, not good at all).&nbsp;&nbsp; I&#039;ve shot jacketed rounds that are far older than 10 to 12 years and had no issue.&nbsp; I think it&#039;s going to take some really special planet lining up type conditions to get galvanic corrosion going in modern cartridges without some help to get it going.</blockquote>

[QUOTE="Shadowrider, post: 2771643, member: 3099"] That's exactly what it is. Where you went off the rails, so to speak, is with the dissimilar metals. The cartridge case is brass, the plating or bullet jacket is copper. Well brass is comprised of 70% copper so it's not very different at all. The other component of brass is zinc and that's interesting. I'm wondering if wet stainless pin tumbling could be the precursor to the process. Because I know for a fact that some of the chemicals added for cleaning (dawn and lemishine) and chemicals in tap water (chlorine, fluoride, minerals) will dezinc brass especially when combined with heat (drying in an oven ain't good, not good at all). I've shot jacketed rounds that are far older than 10 to 12 years and had no issue. I think it's going to take some really special planet lining up type conditions to get galvanic corrosion going in modern cartridges without some help to get it going. [/QUOTE]

Verification