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Rifles, Reloading, Optics, Equipment
Reloading
HELP WITH SATERLEE VELOCITY TEST
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<blockquote data-quote="Veteran" data-source="post: 2442628" data-attributes="member: 118038"><p>Yes you are right. This is randomly generated statistical noise. I can't tell anything from it. Statistically every person has 1 testicle and 1 breast on average. Running a Monte Carlo is totally random. So random is what you did. I think the point you are trying to make is that the flat spots are just statistical aberations which depend on how the randomness lands on the standard deviation of the ammo you are using at each charge. The key is whether your random curves are repeatable each time you run them and they won't be, because the Monte Carlo will be random and do something different next time. </p><p></p><p>I don't believe a real rifle system is that random--- though the ammo may be somewhat random, especially if its not a high quality ES and SD ammo. There really is no point running a Satterlee or Audette, or anything concerning tight groups as a goal with High ES and SD ammo. And I believe getting a 150 fps spread at a given charge weight say at data point 12 for charge weight from one series to another is not with the realm of the real world. Something pretty random about that for sure...........</p><p></p><p>The good advice you gave was to fire more rounds at each charge weight. The whole purpose of the Satterlee in particular though is to save ammo and try to get some charge weight ranges to work from up and down until you get repeatable results with tight groups. If you are going to shoot as many as 10 rounds at each data point to get a statistical average for each data point, it defeats the purpose of trying to narrow down to a range to work from before shooting more ammo to examine grouping and repeatabiity.</p><p></p><p>I ususally shoot 3 rounds at each charge weight which is a compromise but its better than 1 and not as time and money consuming as 10.</p><p></p><p>The goal of a Satterlee is not to get a final answer so its not going to be statistically the test to run for significance.</p><p>To me, its to get rough ranges that show some promise on velocity sweet spots where velocity does not vary a lot over some </p><p>range of charge weight so that there is forgiveness, in where the bullet will hit at a distance if the charge weight is off a little here or there. In that regard it is similar to Audette Ladder in being forgiving of the vertical dispersion out at 300 yards even with slight charge weights. Satrerlee nodes are good places to work from for more fine tuning until one does get repeatability and tight groups.</p></blockquote><p></p>
[QUOTE="Veteran, post: 2442628, member: 118038"] Yes you are right. This is randomly generated statistical noise. I can't tell anything from it. Statistically every person has 1 testicle and 1 breast on average. Running a Monte Carlo is totally random. So random is what you did. I think the point you are trying to make is that the flat spots are just statistical aberations which depend on how the randomness lands on the standard deviation of the ammo you are using at each charge. The key is whether your random curves are repeatable each time you run them and they won't be, because the Monte Carlo will be random and do something different next time. I don't believe a real rifle system is that random--- though the ammo may be somewhat random, especially if its not a high quality ES and SD ammo. There really is no point running a Satterlee or Audette, or anything concerning tight groups as a goal with High ES and SD ammo. And I believe getting a 150 fps spread at a given charge weight say at data point 12 for charge weight from one series to another is not with the realm of the real world. Something pretty random about that for sure........... The good advice you gave was to fire more rounds at each charge weight. The whole purpose of the Satterlee in particular though is to save ammo and try to get some charge weight ranges to work from up and down until you get repeatable results with tight groups. If you are going to shoot as many as 10 rounds at each data point to get a statistical average for each data point, it defeats the purpose of trying to narrow down to a range to work from before shooting more ammo to examine grouping and repeatabiity. I ususally shoot 3 rounds at each charge weight which is a compromise but its better than 1 and not as time and money consuming as 10. The goal of a Satterlee is not to get a final answer so its not going to be statistically the test to run for significance. To me, its to get rough ranges that show some promise on velocity sweet spots where velocity does not vary a lot over some range of charge weight so that there is forgiveness, in where the bullet will hit at a distance if the charge weight is off a little here or there. In that regard it is similar to Audette Ladder in being forgiving of the vertical dispersion out at 300 yards even with slight charge weights. Satrerlee nodes are good places to work from for more fine tuning until one does get repeatability and tight groups. [/QUOTE]
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HELP WITH SATERLEE VELOCITY TEST
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