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Rifles, Reloading, Optics, Equipment
Gunsmithing
What am I looking at??
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<blockquote data-quote="Hand Skills" data-source="post: 1493499" data-attributes="member: 103303"><p>Looks like galling to me. Galling is defined as adhesive wear. In truth it's likely a combination or abrasive wear and adhesive wear. </p><p></p><p>Very much exacerbated by the machining marks left behind by tooling.</p><p></p><p>The mechanism at play here is material getting stuck in the machining marks and taking barrel steel with it when it leaves. Under intense heat and pressure it's not an easy thing to model, but that's what happens in a rifle barrel.</p><p></p><p>Lapping is a very effective means of reducing such tool marks, which in turn reduces fouling. It also can reduce the fouling shots required to reach the equilibrium [USER=96226]@BallisticsGuy[/USER] mentioned.</p><p></p><p>I understand you're asking about the pitting, does that answer your question?</p></blockquote><p></p>
[QUOTE="Hand Skills, post: 1493499, member: 103303"] Looks like galling to me. Galling is defined as adhesive wear. In truth it's likely a combination or abrasive wear and adhesive wear. Very much exacerbated by the machining marks left behind by tooling. The mechanism at play here is material getting stuck in the machining marks and taking barrel steel with it when it leaves. Under intense heat and pressure it's not an easy thing to model, but that's what happens in a rifle barrel. Lapping is a very effective means of reducing such tool marks, which in turn reduces fouling. It also can reduce the fouling shots required to reach the equilibrium [USER=96226]@BallisticsGuy[/USER] mentioned. I understand you're asking about the pitting, does that answer your question? [/QUOTE]
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