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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Two different SD's. Which one is correct?
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<blockquote data-quote="LkeAF" data-source="post: 2974067" data-attributes="member: 118231"><p>I shot a group the other day for a gun that I'm getting ready to sell and was trying to shoot each round with a cold barrel. I was tight on time and didn't get to finish the 5 round group. I shot a three round group and then went back a few days later and shot the final two rounds. There was @ 15 degree ambient temperature difference, so I realize my 5 shot group numbers won't be as good as they would have been had I been able to shoot all 5 the same day. </p><p>That said, what I'm trying to figure out is why my 3 shot group had one SD on my MagnetoSpeed, but has a different number if I plug the velocities into an <a href="https://www.calculator.net/standard-deviation-calculator.html" target="_blank">online SD calculator</a>.</p><p></p><p>The MagnetoSpeed info is shown in the photo. When I plug those velocities into the <a href="https://www.calculator.net/standard-deviation-calculator.html" target="_blank">online SD calculator</a>, I get an SD of 1.154</p><p></p><p>Which one is accurate? Why the difference?[ATTACH=full]521157[/ATTACH]</p></blockquote><p></p>
[QUOTE="LkeAF, post: 2974067, member: 118231"] I shot a group the other day for a gun that I'm getting ready to sell and was trying to shoot each round with a cold barrel. I was tight on time and didn't get to finish the 5 round group. I shot a three round group and then went back a few days later and shot the final two rounds. There was @ 15 degree ambient temperature difference, so I realize my 5 shot group numbers won't be as good as they would have been had I been able to shoot all 5 the same day. That said, what I'm trying to figure out is why my 3 shot group had one SD on my MagnetoSpeed, but has a different number if I plug the velocities into an [URL='https://www.calculator.net/standard-deviation-calculator.html']online SD calculator[/URL]. The MagnetoSpeed info is shown in the photo. When I plug those velocities into the [URL='https://www.calculator.net/standard-deviation-calculator.html']online SD calculator[/URL], I get an SD of 1.154 Which one is accurate? Why the difference?[ATTACH type="full"]521157[/ATTACH] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Two different SD's. Which one is correct?
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