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Rifles, Reloading, Optics, Equipment
Reloading
Powder lot to lot variation
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<blockquote data-quote="Dean2" data-source="post: 1604222" data-attributes="member: 26077"><p>Buy powder at least 8 lbs at a time. Drop 10% from your current load and Chrono three, match them to the 10% less load, same grain weight, from the old batch of powder. I record all of these test loads. It is pretty easy to tell if the new batch is faster, slower or the same. Only a few times have I found a difference bigger than 20 fps on loads over 45 grains. Once I know the relative comparable velocities it is easy to match the new powder to the old without having to go through a big load redevelopment.</p></blockquote><p></p>
[QUOTE="Dean2, post: 1604222, member: 26077"] Buy powder at least 8 lbs at a time. Drop 10% from your current load and Chrono three, match them to the 10% less load, same grain weight, from the old batch of powder. I record all of these test loads. It is pretty easy to tell if the new batch is faster, slower or the same. Only a few times have I found a difference bigger than 20 fps on loads over 45 grains. Once I know the relative comparable velocities it is easy to match the new powder to the old without having to go through a big load redevelopment. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Powder lot to lot variation
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