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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
What “Causes” a Low SD/ES?
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<blockquote data-quote="nksmfamjp" data-source="post: 2260801" data-attributes="member: 1951"><p>My point was this looks mostly like a small sample size error….</p><p></p><p></p><p></p><p>Sorry….I think.</p><p></p><p></p><p>This is a good post. If you load more test loads around this area, you can get and idea of the node width by average velocity change per grain and the 5rd sd'. When you think you are close to center node, load 25 and shoot 5 groups of 5 with the same chrono group. How does Sd look now? Still under 10?</p></blockquote><p></p>
[QUOTE="nksmfamjp, post: 2260801, member: 1951"] My point was this looks mostly like a small sample size error…. Sorry….I think. This is a good post. If you load more test loads around this area, you can get and idea of the node width by average velocity change per grain and the 5rd sd’. When you think you are close to center node, load 25 and shoot 5 groups of 5 with the same chrono group. How does Sd look now? Still under 10? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
What “Causes” a Low SD/ES?
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