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Rifles, Reloading, Optics, Equipment
Reloading
Primer for lowest ES
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<blockquote data-quote="goodgrouper" data-source="post: 93671" data-attributes="member: 2852"><p>I am in total agreement with Abinok.</p><p>All primers are capable of producing low extreme spreads and standard deviations with the right combo of powder and powder column. All primers will probably also yeild different velocities with same powder charges compared.</p><p>That being said, it is my experience that some cartridges will never give great extreme spreads no matter what you try, and then some cartridges will do nothing but give small spreads. It also is my experience that the smaller and faster the bullet, the harder it is to get the standard deviations small. Heavy bullets being propelled at sufficient velocities often give good sd's with just about any load. In other words, you might have a hell of a time getting 40 grain ballistic tips in a 220 swift to get an sd of 25 or less and it might be a piece of cake to get a 338 win mag to shoot an sd of 8 with a 225 grain Accubond. It might even produce sd's in the single digits straight across the board.</p><p></p><p>I have a 6 br improved set up to shoot 105 grain and 95 grain vld's. In load testing, I tried 3 different primers, and 4 different powders for an eventual combo of 27 different loads. Of those 27 loads, 25 ended up having sd's in the single digits! The two that were out were 10 and 11!! THis cartridge used just about any primer to get a low sd.</p></blockquote><p></p>
[QUOTE="goodgrouper, post: 93671, member: 2852"] I am in total agreement with Abinok. All primers are capable of producing low extreme spreads and standard deviations with the right combo of powder and powder column. All primers will probably also yeild different velocities with same powder charges compared. That being said, it is my experience that some cartridges will never give great extreme spreads no matter what you try, and then some cartridges will do nothing but give small spreads. It also is my experience that the smaller and faster the bullet, the harder it is to get the standard deviations small. Heavy bullets being propelled at sufficient velocities often give good sd's with just about any load. In other words, you might have a hell of a time getting 40 grain ballistic tips in a 220 swift to get an sd of 25 or less and it might be a piece of cake to get a 338 win mag to shoot an sd of 8 with a 225 grain Accubond. It might even produce sd's in the single digits straight across the board. I have a 6 br improved set up to shoot 105 grain and 95 grain vld's. In load testing, I tried 3 different primers, and 4 different powders for an eventual combo of 27 different loads. Of those 27 loads, 25 ended up having sd's in the single digits! The two that were out were 10 and 11!! THis cartridge used just about any primer to get a low sd. [/QUOTE]
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Primer for lowest ES
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