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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: 882561" data-attributes="member: 51650"><p>Doublezranch</p><p></p><p>Ball, fine grained and almost no flattening. Meters very uniform in a Lyman #55 or a Lee Perfect Powder Measure. The Lee may be at the upper end of it's capacity to meter that much powder as the 375 RUM can use about 100grs+.</p><p></p><p>In 30-06 Hornaday and Hodgdon do not require a magnum primer but anything that has 70grs+ of powder to set fire to I use a Mag primer. </p><p></p><p>It is a "tailored" powder meaning the Chemical Engineers gave it specific characteristics as to grain size, nitroglycerin content, deterrent coatings etc. so it works in a narrow range of conditions unlike, say, 4895 which has a broad application and tolerance. 4895 will burn well anywhere from 20kpsi to 62kpsi but Superformance is supposedly designed around 58kpsi - 62kpsi according to what I've read. Also read that as it is a new technology ball powder it is far less sensitive to temperature fluctuation than traditional ball powders.</p><p></p><p> In today's world we reloaders enjoy the best selection of components ever. When I started in 1971 there were maybe 12 - 18 different rifle powders and may be that many shotgun/pistol offerings. 4831 was surplus only from Hodgdon's and Alliant had RL 7 and RL17. Last time I looked there were 138 different powders on the market.</p><p></p><p>Don't rule out the Scandinavian powders, Norma or VitaVourri. They are different enough to explore and back in 1974 I had a load in 30-06 that tossed a 200gr pill faster than anything else with Norma 205. The pressure signs were nonexistent.</p><p></p><p> Superformance is on my short list of powders to try if I need something in a burn rate around 4350/4831.</p><p></p><p>Just my experience...</p></blockquote><p></p>
[QUOTE="Kennibear, post: 882561, member: 51650"] Doublezranch Ball, fine grained and almost no flattening. Meters very uniform in a Lyman #55 or a Lee Perfect Powder Measure. The Lee may be at the upper end of it's capacity to meter that much powder as the 375 RUM can use about 100grs+. In 30-06 Hornaday and Hodgdon do not require a magnum primer but anything that has 70grs+ of powder to set fire to I use a Mag primer. It is a "tailored" powder meaning the Chemical Engineers gave it specific characteristics as to grain size, nitroglycerin content, deterrent coatings etc. so it works in a narrow range of conditions unlike, say, 4895 which has a broad application and tolerance. 4895 will burn well anywhere from 20kpsi to 62kpsi but Superformance is supposedly designed around 58kpsi - 62kpsi according to what I've read. Also read that as it is a new technology ball powder it is far less sensitive to temperature fluctuation than traditional ball powders. In today's world we reloaders enjoy the best selection of components ever. When I started in 1971 there were maybe 12 - 18 different rifle powders and may be that many shotgun/pistol offerings. 4831 was surplus only from Hodgdon's and Alliant had RL 7 and RL17. Last time I looked there were 138 different powders on the market. Don't rule out the Scandinavian powders, Norma or VitaVourri. They are different enough to explore and back in 1974 I had a load in 30-06 that tossed a 200gr pill faster than anything else with Norma 205. The pressure signs were nonexistent. Superformance is on my short list of powders to try if I need something in a burn rate around 4350/4831. Just my experience... [/QUOTE]
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375 RUM and the 260 Accubond...
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