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Rifles, Reloading, Optics, Equipment
Reloading
Trying to understand sd and es in load development
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<blockquote data-quote="Kansaswoodguy" data-source="post: 1574084" data-attributes="member: 83267"><p>With an AR if you can get 5 shot groups with SD in the teens or below your doing well. That 8208 works very well in an AR behind 75-77gr bullets at or slightly above book max. For those 50gr I suspect you'll have better luck with Benchmark maybe R-7 or R-10X. I load looking for a flat spot in the velocity where a couple of .3 grain diffrent powder charges in a row have similar average velocity's and the ones on either side make substantial jumps in speed. I then load for the middle of that flat spot these almost always coincide with my best accuracy at extended ranges. This seems to work best with stick powders and ball powders tend to be more linear without the flat spots in load development. Look at Noslers or Seirra's load manuals for your bullet weight and use their accuracy powder may save you some time and money in components.</p></blockquote><p></p>
[QUOTE="Kansaswoodguy, post: 1574084, member: 83267"] With an AR if you can get 5 shot groups with SD in the teens or below your doing well. That 8208 works very well in an AR behind 75-77gr bullets at or slightly above book max. For those 50gr I suspect you’ll have better luck with Benchmark maybe R-7 or R-10X. I load looking for a flat spot in the velocity where a couple of .3 grain diffrent powder charges in a row have similar average velocity’s and the ones on either side make substantial jumps in speed. I then load for the middle of that flat spot these almost always coincide with my best accuracy at extended ranges. This seems to work best with stick powders and ball powders tend to be more linear without the flat spots in load development. Look at Noslers or Seirra’s load manuals for your bullet weight and use their accuracy powder may save you some time and money in components. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Trying to understand sd and es in load development
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