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Rifles, Reloading, Optics, Equipment
Reloading
IMR VS Hogden 4831
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<blockquote data-quote="Mikecr" data-source="post: 321171" data-attributes="member: 1521"><p>This is an exmple of my basis for significant differences:</p><p>On a 6.5WSSM running 47.4gr IMR 4350, I get 3040fps with Lapua 139s..</p><p>Quickload 'what-ifs' for 55Kpsi(my pressure) AND </=100% case fill, all else equal:</p><p></p><p>IMR4350 comes right to the top at 98%fill and 3044fps. </p><p>Interesting and related in order below are:</p><p></p><p>Hodgdon H380 95%fill and 3033fps (needing same 47.4gr)</p><p>IMR 4831 100%fill and 2988fps</p><p>Hodgdon H414 90%fill and 2988fps</p><p>Hodgdon H4350 100%fill and 2966 (needing 48.6gr)</p><p></p><p>This tells me that H380 is closer to IMR4350 than H4350.</p><p></p><p>There were 15 other powders between these. And, in this case, any listed could be used safely. They just can't be assumed as same, and for sure one will best the others in your gun.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 321171, member: 1521"] This is an exmple of my basis for significant differences: On a 6.5WSSM running 47.4gr IMR 4350, I get 3040fps with Lapua 139s.. Quickload 'what-ifs' for 55Kpsi(my pressure) AND </=100% case fill, all else equal: IMR4350 comes right to the top at 98%fill and 3044fps. Interesting and related in order below are: Hodgdon H380 95%fill and 3033fps (needing same 47.4gr) IMR 4831 100%fill and 2988fps Hodgdon H414 90%fill and 2988fps Hodgdon H4350 100%fill and 2966 (needing 48.6gr) This tells me that H380 is closer to IMR4350 than H4350. There were 15 other powders between these. And, in this case, any listed could be used safely. They just can't be assumed as same, and for sure one will best the others in your gun. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
IMR VS Hogden 4831
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