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Rifles, Reloading, Optics, Equipment
Reloading
Working up a load ... getting conflicting data?
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<blockquote data-quote="Bob Wright" data-source="post: 1991816" data-attributes="member: 104363"><p>Do a 10 shot ladder of each, starting loads should be your baseline on the manual if you have no experience with that powder primer combo. Take it in .5 gr increments up to 1 to 2 grains over max listed. Find your pressure point where you have primer flattening, extractor marks, heavy bolt. That is your absolute max. Do it over a chronograph. </p><p>Mark each shot on the target. It should be at 300 yards. I use a Go Pro camera set to 2 minute intervals at the base of the target to record shot string. You'll find a node in there that flattens out for 2 or 3 rounds. That's where you do a seating test within the highest node. Once your seating test determines the best depth, then </p><p>check the powder charge within that node from the low to high. You'll hopefully find the higher part of the node will be repeatable and group well. I choose the higher velocity powder for seating and working in that node. Hopefully you get good ES and groups.</p></blockquote><p></p>
[QUOTE="Bob Wright, post: 1991816, member: 104363"] Do a 10 shot ladder of each, starting loads should be your baseline on the manual if you have no experience with that powder primer combo. Take it in .5 gr increments up to 1 to 2 grains over max listed. Find your pressure point where you have primer flattening, extractor marks, heavy bolt. That is your absolute max. Do it over a chronograph. Mark each shot on the target. It should be at 300 yards. I use a Go Pro camera set to 2 minute intervals at the base of the target to record shot string. You'll find a node in there that flattens out for 2 or 3 rounds. That's where you do a seating test within the highest node. Once your seating test determines the best depth, then check the powder charge within that node from the low to high. You'll hopefully find the higher part of the node will be repeatable and group well. I choose the higher velocity powder for seating and working in that node. Hopefully you get good ES and groups. [/QUOTE]
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Reloading
Working up a load ... getting conflicting data?
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