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Rifles, Reloading, Optics, Equipment
Reloading
Imr4350 imr7828 h1000 powders
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<blockquote data-quote="MudRunner2005" data-source="post: 1279057" data-attributes="member: 12995"><p>Not necessarily... Bore size, case size, bore-to-case capacity ratio, burn rate, bullet weight, overbore ratio, fill ratio, etc... Lots of things come into play when determining a proper powder for your cartridge. Just about any cartridge labeled as "magnum" I would start around Reloder 22/Norma MRP and slower powders (my personal opinion).</p><p></p><p>For the .257 Wby, try Norma MRP, Reloder 25, IMR 7828 SSC, IMR 7977, or H1000. With a Berger 115 VLD or something of similar weight or heavier, I recommend the slower burning powders to get the most fill ratio like IMR 7828 SSC, 7977, and H1000.</p></blockquote><p></p>
[QUOTE="MudRunner2005, post: 1279057, member: 12995"] Not necessarily... Bore size, case size, bore-to-case capacity ratio, burn rate, bullet weight, overbore ratio, fill ratio, etc... Lots of things come into play when determining a proper powder for your cartridge. Just about any cartridge labeled as "magnum" I would start around Reloder 22/Norma MRP and slower powders (my personal opinion). For the .257 Wby, try Norma MRP, Reloder 25, IMR 7828 SSC, IMR 7977, or H1000. With a Berger 115 VLD or something of similar weight or heavier, I recommend the slower burning powders to get the most fill ratio like IMR 7828 SSC, 7977, and H1000. [/QUOTE]
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Reloading
Imr4350 imr7828 h1000 powders
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