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Rifles, Reloading, Optics, Equipment
Reloading
375 RUM and the 260 Accubond...
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<blockquote data-quote="Kennibear" data-source="post: 885608" data-attributes="member: 51650"><p>Thanks Moki!</p><p></p><p>Already trying RL19 w/300gr bullets.</p><p></p><p>Did some research on the Lapua website:</p><p><a href="http://www.lapua.com/en/products/reloading/vihtavuori-reloading-data/relodata/5" target="_blank">Products - Lapua</a></p><p></p><p>They don't list either the 375 RUM or the 375 Ruger but the 338LM and others do shed some light. The N5XX correspond to the same burning rate as the N1XX series, that is N560=N160 or N540=N140 in overall powder speed, fast/slow. The N5XX contain nitroglycerine (glycerol) to boost energy and seems to increase velocities over single based N1XX powders by about 100fps. You can interpolate a load from another caliber if you can find a similar weight of a known powder. For instance if you are using 96grs of 4350 and another cartridge/load of the same pressure level also uses 96grs of 4350 then the N1XX/N5XX load for the second cartridge would be close to what you could use, -10% to start and building up from there.</p><p></p><p>Lapua's website lists N570 which might be just the ticket in 375 RUM. I have never seen it on this side of the pond but I am keeping a sharp eye out for it now.</p><p></p><p>Hope you guys can use this info.</p></blockquote><p></p>
[QUOTE="Kennibear, post: 885608, member: 51650"] Thanks Moki! Already trying RL19 w/300gr bullets. Did some research on the Lapua website: [url=http://www.lapua.com/en/products/reloading/vihtavuori-reloading-data/relodata/5]Products - Lapua[/url] They don't list either the 375 RUM or the 375 Ruger but the 338LM and others do shed some light. The N5XX correspond to the same burning rate as the N1XX series, that is N560=N160 or N540=N140 in overall powder speed, fast/slow. The N5XX contain nitroglycerine (glycerol) to boost energy and seems to increase velocities over single based N1XX powders by about 100fps. You can interpolate a load from another caliber if you can find a similar weight of a known powder. For instance if you are using 96grs of 4350 and another cartridge/load of the same pressure level also uses 96grs of 4350 then the N1XX/N5XX load for the second cartridge would be close to what you could use, -10% to start and building up from there. Lapua's website lists N570 which might be just the ticket in 375 RUM. I have never seen it on this side of the pond but I am keeping a sharp eye out for it now. Hope you guys can use this info. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
375 RUM and the 260 Accubond...
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