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Rifles, Reloading, Optics, Equipment
Reloading
HELP WITH SATERLEE VELOCITY TEST
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<blockquote data-quote="redneckdan" data-source="post: 1957746" data-attributes="member: 8932"><p>To the OP.</p><p></p><p>I use a Satterlee type method as well. I dont always get the most accurate load. I do get loads that hold up well across wide ranging conditions, even with that evil ball powder stuff.</p><p></p><p>First I run a basic test like you have. I pick out a high node for hunting loads and a lower node for high volume practice. I load a test of each node in .1gr steps 5rds each step and shoot for velocity. These velocities are graphed and the data analyzed. Within that node there is usually a sweet spot. Fine bullet tune might tweak the accuracy a bit more.</p><p></p><p>I have a load for a savage desert tactical 6 creedmoor with ramshot magnum and the DTAC that shoots with an SD of 4. Off bags it groups around .75" @ 100yds and around 3" @ 600. Why it does better at distance, I don't know. But it has been my experience that loads developed this way dont always do well on the short course but seem to hold together better at range and across changing conditions. And that is what I am after.</p><p></p><p>I have a load for a savage 12FV with the 69 SMK and 4064 that i developed before i had a chrono and was using the paper target @ 300 and look for clusters method. It always shot really good except in the summer. I finally threw a chrono on it and on a good summer day it has an SD above 50. Once temps get above 80F, it goes nuts. It gets worse with range and higher temps. Both groups are 5 shots. Temps noted. I show this as an example of a reasonably accurate load that is useless to me.</p></blockquote><p></p>
[QUOTE="redneckdan, post: 1957746, member: 8932"] To the OP. I use a Satterlee type method as well. I dont always get the most accurate load. I do get loads that hold up well across wide ranging conditions, even with that evil ball powder stuff. First I run a basic test like you have. I pick out a high node for hunting loads and a lower node for high volume practice. I load a test of each node in .1gr steps 5rds each step and shoot for velocity. These velocities are graphed and the data analyzed. Within that node there is usually a sweet spot. Fine bullet tune might tweak the accuracy a bit more. I have a load for a savage desert tactical 6 creedmoor with ramshot magnum and the DTAC that shoots with an SD of 4. Off bags it groups around .75" @ 100yds and around 3" @ 600. Why it does better at distance, I don't know. But it has been my experience that loads developed this way dont always do well on the short course but seem to hold together better at range and across changing conditions. And that is what I am after. I have a load for a savage 12FV with the 69 SMK and 4064 that i developed before i had a chrono and was using the paper target @ 300 and look for clusters method. It always shot really good except in the summer. I finally threw a chrono on it and on a good summer day it has an SD above 50. Once temps get above 80F, it goes nuts. It gets worse with range and higher temps. Both groups are 5 shots. Temps noted. I show this as an example of a reasonably accurate load that is useless to me. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
HELP WITH SATERLEE VELOCITY TEST
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