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Rifles, Reloading, Optics, Equipment
Reloading
CUPs compaired to PSIs
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<blockquote data-quote="MagnumManiac" data-source="post: 1217926" data-attributes="member: 10755"><p>One word of caution, SAAMI changed their testing parameters on pressure. In 2010/11, thet changed from using an average of pressure data for maximum charges to absolute pressure data, this is why maximum charges have changed. Every test I do with my pressure trace on average pressure ALWAYS results in a higher max charge. If I test single cases at each charge level, the max is lower than the average.</p><p>This is a significant difference. It makes a huge difference to max listed loads in modern manuals.</p><p>You may think they're conservative, but, what's max is actually max in those manuals.</p><p></p><p>Cheers.</p><p>gun)</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1217926, member: 10755"] One word of caution, SAAMI changed their testing parameters on pressure. In 2010/11, thet changed from using an average of pressure data for maximum charges to absolute pressure data, this is why maximum charges have changed. Every test I do with my pressure trace on average pressure ALWAYS results in a higher max charge. If I test single cases at each charge level, the max is lower than the average. This is a significant difference. It makes a huge difference to max listed loads in modern manuals. You may think they're conservative, but, what's max is actually max in those manuals. Cheers. gun) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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CUPs compaired to PSIs
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