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Rifles, Reloading, Optics, Equipment
Reloading
Too much pressure in the 300 RUM?
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<blockquote data-quote="ricka0" data-source="post: 67272" data-attributes="member: 3086"><p>[ QUOTE ]</p><p>Southwest Products PressureTrace is a very inexpensive method to attain the real pressure numbers, no guessing game </p><p></p><p>[/ QUOTE ]</p><p></p><p>Actually it's totally guessing until you calibrate it. And the only ez way to calibrate it is to fire over-pressured loads that show signs of overpressure - then you can use it to get a safe max.</p><p></p><p>Lou Boyd showed how to calibrate by using known pressure in the chamber - posted on ExtremeInAccuracy.com, but that site has been down for several days. When they fix the site I'll post Lou's data.</p><p></p><p>The strain gage you attach to your gun is using many assumptions.</p><p></p><p>I'm going to get a <a href="http://www.shootingsoftware.com/pressure.htm" target="_blank">USB PressureTrace</a> and I'll calibrate it with all the methods outlined in this thread.</p></blockquote><p></p>
[QUOTE="ricka0, post: 67272, member: 3086"] [ QUOTE ] Southwest Products PressureTrace is a very inexpensive method to attain the real pressure numbers, no guessing game [/ QUOTE ] Actually it's totally guessing until you calibrate it. And the only ez way to calibrate it is to fire over-pressured loads that show signs of overpressure - then you can use it to get a safe max. Lou Boyd showed how to calibrate by using known pressure in the chamber - posted on ExtremeInAccuracy.com, but that site has been down for several days. When they fix the site I'll post Lou's data. The strain gage you attach to your gun is using many assumptions. I'm going to get a [url="http://www.shootingsoftware.com/pressure.htm"]USB PressureTrace[/url] and I'll calibrate it with all the methods outlined in this thread. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Too much pressure in the 300 RUM?
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