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Rifles, Reloading, Optics, Equipment
Reloading
Need some advice on picking a scale.
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<blockquote data-quote="o2bmark" data-source="post: 1603567" data-attributes="member: 6358"><p>Seems like we need to be discussing how we measure velocity when talking about SD and velocity spreads of 1 or .5 granules of powder. I use LabRadar and ohler (4' spacing because hard to stabilize screens over longer separation) and I don't have confidence in sub 10fps (more like 5) precision needed to evaluate 1 granule of powder differences. Vertical stringing @ 1000+ yds provides clues but with all the other variables I always wonder if I'm chasing the right one. With above gear I've had what appeared to be a slow round go high and vice-versa. All this with sorted brass, measured/turned necks attention to tension and runout etc. The fact that some of you can manage those variables to make a granule of powder a big/measurable factor amazes and impresses me.</p></blockquote><p></p>
[QUOTE="o2bmark, post: 1603567, member: 6358"] Seems like we need to be discussing how we measure velocity when talking about SD and velocity spreads of 1 or .5 granules of powder. I use LabRadar and ohler (4’ spacing because hard to stabilize screens over longer separation) and I don’t have confidence in sub 10fps (more like 5) precision needed to evaluate 1 granule of powder differences. Vertical stringing @ 1000+ yds provides clues but with all the other variables I always wonder if I’m chasing the right one. With above gear I’ve had what appeared to be a slow round go high and vice-versa. All this with sorted brass, measured/turned necks attention to tension and runout etc. The fact that some of you can manage those variables to make a granule of powder a big/measurable factor amazes and impresses me. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Need some advice on picking a scale.
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