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Rifles, Reloading, Optics, Equipment
Reloading
Known Loads too hot now..why
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<blockquote data-quote="Pdvdh" data-source="post: 385323" data-attributes="member: 4191"><p>What's the relationship between dynamic viscosity and friction reduction between a brass cartridge and a steel chamber? I know there is a relationship between dynamic viscosity and friction for purposes of fluid flow in pipes and open channel fluid flow. Didn't know any relationship existed between dynamic viscosity and friction coefficient modification between two pieces of steel or a piece of cartridge brass and steel.</p><p></p><p>I would expect the very best friction reduction lubricant to be the same lubricant that best reduces friction between a fired cartridge case and a full length resizing die (brass and steel - just like in the rifle chamber). Have you ever tried lubing fired cases with water prior to resizing? Did it reduce friction better than Imperial Sizing Die Wax. </p><p></p><p>I expect there are some lube oils that will yield a lower friction coefficient than water. The lube that provides the greatest reduction in friction is the one that will result in the greatest bolt thrust.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 385323, member: 4191"] What's the relationship between dynamic viscosity and friction reduction between a brass cartridge and a steel chamber? I know there is a relationship between dynamic viscosity and friction for purposes of fluid flow in pipes and open channel fluid flow. Didn't know any relationship existed between dynamic viscosity and friction coefficient modification between two pieces of steel or a piece of cartridge brass and steel. I would expect the very best friction reduction lubricant to be the same lubricant that best reduces friction between a fired cartridge case and a full length resizing die (brass and steel - just like in the rifle chamber). Have you ever tried lubing fired cases with water prior to resizing? Did it reduce friction better than Imperial Sizing Die Wax. I expect there are some lube oils that will yield a lower friction coefficient than water. The lube that provides the greatest reduction in friction is the one that will result in the greatest bolt thrust. [/QUOTE]
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Reloading
Known Loads too hot now..why
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