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Rifles, Reloading, Optics, Equipment
Reloading
Factory ammunition powders?
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<blockquote data-quote="oldpilot" data-source="post: 2558294" data-attributes="member: 87110"><p>I have a BAR in 7mm Rem Mag and tried some Superformance 154gr SST Ammo after 30 rounds of light break in loads, and it was very accurate with .75 inch groups. I really was surprised and thought maybe I should try to duplicate it. I know that fact about factory ammo powders and so I dropped 2.5 grains off what the factory ammo held. I used an average fired case weight plus 5.6 grs for 215 primers and an average weight of two boxes of 154gr bullets and average weight of two boxes of loaded SuperFormance ammo to come up with an approximate loaded powder charge. Then I pulled two loaded cartridges and weighed the Charges. My calculated was .1 grain less than actual. Then I set my starting point 2.5 grains less and loaded 5 rounds with my SuperFormance Powder. I fired the first one and the primer was flattened but not cratered. I fired the remaining 4, and the results were a 1.6" group. That isn't too bad for an autoloader, but the velocity was down a bunch. I agree with the need for Hodgen and Hornady should really be required to have a disclaimer or better yet they be required to provide load data for reloading powder or better yet rename the factory and for sale lots.</p></blockquote><p></p>
[QUOTE="oldpilot, post: 2558294, member: 87110"] I have a BAR in 7mm Rem Mag and tried some Superformance 154gr SST Ammo after 30 rounds of light break in loads, and it was very accurate with .75 inch groups. I really was surprised and thought maybe I should try to duplicate it. I know that fact about factory ammo powders and so I dropped 2.5 grains off what the factory ammo held. I used an average fired case weight plus 5.6 grs for 215 primers and an average weight of two boxes of 154gr bullets and average weight of two boxes of loaded SuperFormance ammo to come up with an approximate loaded powder charge. Then I pulled two loaded cartridges and weighed the Charges. My calculated was .1 grain less than actual. Then I set my starting point 2.5 grains less and loaded 5 rounds with my SuperFormance Powder. I fired the first one and the primer was flattened but not cratered. I fired the remaining 4, and the results were a 1.6" group. That isn't too bad for an autoloader, but the velocity was down a bunch. I agree with the need for Hodgen and Hornady should really be required to have a disclaimer or better yet they be required to provide load data for reloading powder or better yet rename the factory and for sale lots. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Factory ammunition powders?
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