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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: 882467" data-attributes="member: 51650"><p>DoubleZranch</p><p>Might want to look at Hodgdon's Superformance. Used it in development loads for the Hornaday 300gr SpBt in the 375 Ruger. The two loads were 80gr of IMR 4350 and 83.3gr Superformance. The 4350 showed about 56 - 57kpsi (Pressure Trace II) and the Superformance was about 4kpsi less. These loads were from Hornaday's Manual but they are safe even with their Copper clad steel jacketed DGX/DGS Dangerous Game bullets. Steel jackets have a much higher pressure coefficient so the AccuBond would be safe with a comparable ratio of 4350/Superformance. Superformance works at about 60kpsi and it isn't for every load but where it works it is the best. Superfomance has a burn rate about the same as 4831 and RL19.</p><p></p><p>Ball park load is 92grs but I would start lower and work up to reasonable pressure signs. The 80gr 4350 - 300gr Spbt load in the 375 Ruger was heavily compressed but the 83.3gr Superformance load was about 100% density. You can pack a ton of Superformance in a case - very dense powder. As always a Federal #215 LRMag primer.</p><p></p><p>Just my two cents....</p></blockquote><p></p>
[QUOTE="Kennibear, post: 882467, member: 51650"] DoubleZranch Might want to look at Hodgdon's Superformance. Used it in development loads for the Hornaday 300gr SpBt in the 375 Ruger. The two loads were 80gr of IMR 4350 and 83.3gr Superformance. The 4350 showed about 56 - 57kpsi (Pressure Trace II) and the Superformance was about 4kpsi less. These loads were from Hornaday's Manual but they are safe even with their Copper clad steel jacketed DGX/DGS Dangerous Game bullets. Steel jackets have a much higher pressure coefficient so the AccuBond would be safe with a comparable ratio of 4350/Superformance. Superformance works at about 60kpsi and it isn't for every load but where it works it is the best. Superfomance has a burn rate about the same as 4831 and RL19. Ball park load is 92grs but I would start lower and work up to reasonable pressure signs. The 80gr 4350 - 300gr Spbt load in the 375 Ruger was heavily compressed but the 83.3gr Superformance load was about 100% density. You can pack a ton of Superformance in a case - very dense powder. As always a Federal #215 LRMag primer. Just my two cents.... [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
375 RUM and the 260 Accubond...
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