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Rifles, Reloading, Optics, Equipment
Reloading
Fireforming Pressures
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<blockquote data-quote="azsugarbear" data-source="post: 750039" data-attributes="member: 4809"><p>As I understand it, barrel life or throat erosion is not just about heat, but rather heat combined with pressure. Hence the aligator skin appearance in the throat area only and not the entire barrel. The cornmeal loads do not develop anywhere close to the kind of pressure that a live round does.</p><p> </p><p>I'm not aware of any studies confirming wear difference between the cornmeal and reduced loads on the barrel when case forming. I have not found the cornmeal method to be particularly messy, but each of us have our own experiences. The gunsmith who built this rifle was Kirby Allen. Never met the man, but I like his appraoch and common sense in all matters involving shooting. I suspect he has forgotten more about shooting a rifle than I will ever know. He recommended the cornmeal method to me and has even posted a thread on it here several years ago. I'm just trying to offer J300UM another alternative.</p></blockquote><p></p>
[QUOTE="azsugarbear, post: 750039, member: 4809"] As I understand it, barrel life or throat erosion is not just about heat, but rather heat combined with pressure. Hence the aligator skin appearance in the throat area only and not the entire barrel. The cornmeal loads do not develop anywhere close to the kind of pressure that a live round does. I'm not aware of any studies confirming wear difference between the cornmeal and reduced loads on the barrel when case forming. I have not found the cornmeal method to be particularly messy, but each of us have our own experiences. The gunsmith who built this rifle was Kirby Allen. Never met the man, but I like his appraoch and common sense in all matters involving shooting. I suspect he has forgotten more about shooting a rifle than I will ever know. He recommended the cornmeal method to me and has even posted a thread on it here several years ago. I'm just trying to offer J300UM another alternative. [/QUOTE]
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