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Rifles, Reloading, Optics, Equipment
Reloading
Standard Deviation & Extreme Spread - What does it take?
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<blockquote data-quote="J E Custom" data-source="post: 1332624" data-attributes="member: 2736"><p>Yes I work up to a near maximum charge and based on the results, I will leave it where it has the best ES and accuracy. Some rifles/barrels like more velocity and some don't, so I look for that node that gives me the best of all, not the best velocity or any one thing.</p><p></p><p>Most rifles that I have, seem to be just under the max pressure, But a few have only gotten better and I have had to avoid the temptation to keep going up until I start blowing primers or encounter heavy bolt lift.</p><p></p><p>Normally if you have a good powder, primer and bullet weight combination and case density, SDs will stay the same or improve slightly because the initial ignition start is consistent and adding a few more grains of powder will only increase velocity and pressure. If not the SDs will be all over the place as you change the powder charge.</p><p></p><p>Getting good SD's and ES's is only the start to getting good consistent, accurate loads in my opinion.</p><p></p><p>This is just been my experience.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1332624, member: 2736"] Yes I work up to a near maximum charge and based on the results, I will leave it where it has the best ES and accuracy. Some rifles/barrels like more velocity and some don't, so I look for that node that gives me the best of all, not the best velocity or any one thing. Most rifles that I have, seem to be just under the max pressure, But a few have only gotten better and I have had to avoid the temptation to keep going up until I start blowing primers or encounter heavy bolt lift. Normally if you have a good powder, primer and bullet weight combination and case density, SDs will stay the same or improve slightly because the initial ignition start is consistent and adding a few more grains of powder will only increase velocity and pressure. If not the SDs will be all over the place as you change the powder charge. Getting good SD's and ES's is only the start to getting good consistent, accurate loads in my opinion. This is just been my experience. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Standard Deviation & Extreme Spread - What does it take?
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