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Rifles, Reloading, Optics, Equipment
Reloading
Testing primers
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<blockquote data-quote="J E Custom" data-source="post: 1677769" data-attributes="member: 2736"><p>It is true in some rifles. I like to give examples that have proved this in certain rifles. My 31" barreled 7 STW went from a SD of 17 to a .04 when I switch from a Fed 215 to a Remington LR 9 1/2. </p><p></p><p>The accuracy at 600 yards also improved 100% but the velocity went down almost 40 Ft/sec. The powder charge was 87 grains of H 5010</p><p>and the Large Rifle 9 1/2 primer seamed to produce a more consistent pressure and brass life was great.</p><p></p><p>Sometimes it just pays to try different primers, but be sure you start low, especially when going to a magnum primer. Typically it is best to start with the recommended primer listed in the load data.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1677769, member: 2736"] It is true in some rifles. I like to give examples that have proved this in certain rifles. My 31" barreled 7 STW went from a SD of 17 to a .04 when I switch from a Fed 215 to a Remington LR 9 1/2. The accuracy at 600 yards also improved 100% but the velocity went down almost 40 Ft/sec. The powder charge was 87 grains of H 5010 and the Large Rifle 9 1/2 primer seamed to produce a more consistent pressure and brass life was great. Sometimes it just pays to try different primers, but be sure you start low, especially when going to a magnum primer. Typically it is best to start with the recommended primer listed in the load data. J E CUSTOM [/QUOTE]
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Testing primers
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