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The Range
Ammo & Reloading
38 Reloading Data Question
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<blockquote data-quote="MBB" data-source="post: 821765" data-attributes="member: 2658"><p>I called Alliant, Sierra, Lyman, and Hornady asking the same question. They all said the same thing: Differences in bullet bearing surfaces, ambient conditions, primers, and even the test gun's chamber dimensions will produce different results. Using older (20+ years) primer and powders and/or not the most current reloading manuals will also cause big differences because the chemical compositions of primers and powders have changed drastically over the decades. </p><p></p><p>They all recommended using the most current loading data with current components that match the loading data as closely as possible. Start at least 10% lower than the max charge listed and work your way up looking for signs of excessive pressure. </p><p></p><p>If you're really concerned, use the lowest listed maximum, start 10% lower, and work your way up to the load you like without exceeding the highest listed max charge.</p></blockquote><p></p>
[QUOTE="MBB, post: 821765, member: 2658"] I called Alliant, Sierra, Lyman, and Hornady asking the same question. They all said the same thing: Differences in bullet bearing surfaces, ambient conditions, primers, and even the test gun's chamber dimensions will produce different results. Using older (20+ years) primer and powders and/or not the most current reloading manuals will also cause big differences because the chemical compositions of primers and powders have changed drastically over the decades. They all recommended using the most current loading data with current components that match the loading data as closely as possible. Start at least 10% lower than the max charge listed and work your way up looking for signs of excessive pressure. If you're really concerned, use the lowest listed maximum, start 10% lower, and work your way up to the load you like without exceeding the highest listed max charge. [/QUOTE]
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38 Reloading Data Question
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