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Rifles, Reloading, Optics, Equipment
Reloading
Changing Powder Lots
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<blockquote data-quote="Shortmagman" data-source="post: 247339" data-attributes="member: 10723"><p>I use RL-19 for a number of applications so I buy it in 5 lbs containers. I just started a new lot, I dropped down a couple of grains and worked up one grain at at time until I was at where my old lot had been. I shot them over my chronograph along with rounds from the old batch. What I found in two different guns was it will take about one extra grain of powder to produce the same velocity as the old powder. With the new lot being slower than the old one is was not dangerous. But if they were in reverse(old lot being slower) I could have run into some pressure problem.</p><p></p><p></p><p>I think that you are on the right track, but I would load 68, 69, 69.5, 70.0, and 70.5. Of course you need to shoot them across a chronograph to see how they compare with your old batch.</p></blockquote><p></p>
[QUOTE="Shortmagman, post: 247339, member: 10723"] I use RL-19 for a number of applications so I buy it in 5 lbs containers. I just started a new lot, I dropped down a couple of grains and worked up one grain at at time until I was at where my old lot had been. I shot them over my chronograph along with rounds from the old batch. What I found in two different guns was it will take about one extra grain of powder to produce the same velocity as the old powder. With the new lot being slower than the old one is was not dangerous. But if they were in reverse(old lot being slower) I could have run into some pressure problem. I think that you are on the right track, but I would load 68, 69, 69.5, 70.0, and 70.5. Of course you need to shoot them across a chronograph to see how they compare with your old batch. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Changing Powder Lots
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