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Rifles, Reloading, Optics, Equipment
Reloading
5 or 3 shot group when determining ES/SD???
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<blockquote data-quote="J E Custom" data-source="post: 625959" data-attributes="member: 2736"><p>3 or 4 SDs is possible but rare. The big bores ( 375s, 416s and 458s)are the most likely because </p><p>of bullet weight. (less affected by subtle pressure changes)).</p><p></p><p>I personally have never owned a rifle smaller than a 416 that could prodeuce SDs that low</p><p>consistently</p><p></p><p>I try to get into the single digits (09-) but am very happy is I get 12 or less.</p><p></p><p>All barrels have some whip or twist when fired. the heavier the barrel the less it does this.</p><p></p><p>The "Node" that was referred to is simply the most consistant harmonics.(If the barrel does </p><p>the same thing every time it will be more consistant/(Accurate in most cases).</p><p></p><p>As was stated . There is no one and only way to find the best load. I found that starting with </p><p>the chronograph saved lots of ammo and barrel ware for me.</p><p></p><p>Also I will try any load that is recomended by a fellow competitor and sometimes they have </p><p>worked out but most of the time not as good as I expect, and as we all know each rifle/barrel</p><p>is different and likes what it likes.</p><p></p><p>There are standard known accuracy loads that will work well in some rifles but not in all,so</p><p>testing is the name of the game.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 625959, member: 2736"] 3 or 4 SDs is possible but rare. The big bores ( 375s, 416s and 458s)are the most likely because of bullet weight. (less affected by subtle pressure changes)). I personally have never owned a rifle smaller than a 416 that could prodeuce SDs that low consistently I try to get into the single digits (09-) but am very happy is I get 12 or less. All barrels have some whip or twist when fired. the heavier the barrel the less it does this. The "Node" that was referred to is simply the most consistant harmonics.(If the barrel does the same thing every time it will be more consistant/(Accurate in most cases). As was stated . There is no one and only way to find the best load. I found that starting with the chronograph saved lots of ammo and barrel ware for me. Also I will try any load that is recomended by a fellow competitor and sometimes they have worked out but most of the time not as good as I expect, and as we all know each rifle/barrel is different and likes what it likes. There are standard known accuracy loads that will work well in some rifles but not in all,so testing is the name of the game. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
5 or 3 shot group when determining ES/SD???
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