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Rifles, Reloading, Optics, Equipment
Reloading
7mm Rem Mag and H4831SC
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<blockquote data-quote="idaho elk hunter" data-source="post: 975622" data-attributes="member: 68226"><p>I have been reloading for the 7 mag since just about the time it was born. 1963 to be exact. I have burnt out no less than 15 barrels out on this cartridge. My point is I have used just about every powder there is and all the combinations.</p><p> Everyone nowadays will say Retumbo. Retumbo is great for high velocity but I have not found it good past 600 yds. You can not get the standard deviation down enough to stretch it past this.</p><p> H4831 is still one of the best powders there is. If you load it to your rifles capability and watch for signs of pressure you will find that it will surpass the magical 3000 fps mark. Using Winchester brass and mag primers, seat the bullet to the max magazine length. Do not adjust the COAL for the node but adjust the bedding. I bet you will end up in the grains of powder in the area or right next to what you call the cartridge. Work up SLOW. You will get it in the 65000 psi range with 3 maybe 4 loads out of the brass. H1000, Ramshot Magnum, and Norma 217 are very close in performance. RL 33 is now in my testing.</p></blockquote><p></p>
[QUOTE="idaho elk hunter, post: 975622, member: 68226"] I have been reloading for the 7 mag since just about the time it was born. 1963 to be exact. I have burnt out no less than 15 barrels out on this cartridge. My point is I have used just about every powder there is and all the combinations. Everyone nowadays will say Retumbo. Retumbo is great for high velocity but I have not found it good past 600 yds. You can not get the standard deviation down enough to stretch it past this. H4831 is still one of the best powders there is. If you load it to your rifles capability and watch for signs of pressure you will find that it will surpass the magical 3000 fps mark. Using Winchester brass and mag primers, seat the bullet to the max magazine length. Do not adjust the COAL for the node but adjust the bedding. I bet you will end up in the grains of powder in the area or right next to what you call the cartridge. Work up SLOW. You will get it in the 65000 psi range with 3 maybe 4 loads out of the brass. H1000, Ramshot Magnum, and Norma 217 are very close in performance. RL 33 is now in my testing. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
7mm Rem Mag and H4831SC
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