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<blockquote data-quote="coyotezapper" data-source="post: 1467653" data-attributes="member: 20438"><p>Even when I open the targets in another window there are some that the velocities can't be seen. As far as OCW, what you are looking for is a minimal velocity increase from one powder charge to the next. For example if you are only seeing a 10 fps increase from one half grain increase compared to say a 50 fps increase then this is what is considered OCW, powder node or flat spot, whatever you want to call it. Its in this area where you want to do your seating depth testing.</p><p></p><p>Groups 9 and 10 look ok also and could be tightened up with seating depth testing but because of the difference in velocity between the two, the powder node will be very narrow. I like to have a minimum of a half grain window which allows me to have a good load longer without having to a change charge weight and seating depth as often.</p></blockquote><p></p>
[QUOTE="coyotezapper, post: 1467653, member: 20438"] Even when I open the targets in another window there are some that the velocities can't be seen. As far as OCW, what you are looking for is a minimal velocity increase from one powder charge to the next. For example if you are only seeing a 10 fps increase from one half grain increase compared to say a 50 fps increase then this is what is considered OCW, powder node or flat spot, whatever you want to call it. Its in this area where you want to do your seating depth testing. Groups 9 and 10 look ok also and could be tightened up with seating depth testing but because of the difference in velocity between the two, the powder node will be very narrow. I like to have a minimum of a half grain window which allows me to have a good load longer without having to a change charge weight and seating depth as often. [/QUOTE]
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