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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm Allen Mag test rifle finished.....
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<blockquote data-quote="ricka0" data-source="post: 76458" data-attributes="member: 3086"><p><strong>Re: wc872 burn rate</strong></p><p></p><p>[ QUOTE ]</p><p>[ QUOTE ]</p><p>According to the chemists I've talked to, <strong><em> (and previously posted) </em></strong> there is <strong><em><font color=" green"> virtually no phase changes </em></strong></font> going on <strong><em> or</em></strong> creation of new gas molecules. (If you can cite a credible reference stating otherwise I'd love to see it.)</p><p></p><p>[/ QUOTE ]</p><p>I guess I drink way too much beer when I reload. I simply have no memory of ever filling a case with a compressed gas. Is that sort of like putting air in the tires of your truck? Or filling a propane tank (hey even that one has a phase change too!)?</p><p></p><p>Sorry, but I don't need to cite "sources" to tell me what I'm dropping in the case is a lot of small chunks of a solid. And what comes out of the barrel is mainly gas. And that there's a burning process in between responsible for the change which creates a large portion of the heat the barrel <strong>[sic]</strong> recieves.</p><p>Your whole PV=nRT model would likely work well for a Daisy air rifle. </p><p></p><p>[/ QUOTE ]</p><p></p><p><strong>PV=nRT </strong> is not my model - but thanks for crediting me with it<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> You are getting closer. Yes what heats the barrel is what pushes the bullet. Not the creation of gases or trival phase change.</p><p></p><p>What % contribution to bullet acceleration is heat?</p></blockquote><p></p>
[QUOTE="ricka0, post: 76458, member: 3086"] [b]Re: wc872 burn rate[/b] [ QUOTE ] [ QUOTE ] According to the chemists I’ve talked to, [b][i] (and previously posted) [/i][/b][i][/i] there is [b][i]<font color=" green"> virtually no phase changes [/i][/b][i][/i]</font> going on [b][i] or[/i][/b][i][/i] creation of new gas molecules. (If you can cite a credible reference stating otherwise I’d love to see it.) [/ QUOTE ] I guess I drink way too much beer when I reload. I simply have no memory of ever filling a case with a compressed gas. Is that sort of like putting air in the tires of your truck? Or filling a propane tank (hey even that one has a phase change too!)? Sorry, but I don't need to cite "sources" to tell me what I'm dropping in the case is a lot of small chunks of a solid. And what comes out of the barrel is mainly gas. And that there's a burning process in between responsible for the change which creates a large portion of the heat the barrel [b][sic][/b] recieves. Your whole PV=nRT model would likely work well for a Daisy air rifle. [/ QUOTE ] [b]PV=nRT [/b] is not my model - but thanks for crediting me with it:) You are getting closer. Yes what heats the barrel is what pushes the bullet. Not the creation of gases or trival phase change. What % contribution to bullet acceleration is heat? [/QUOTE]
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7mm Allen Mag test rifle finished.....
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