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Rifles, Reloading, Optics, Equipment
Reloading
Ladder Tests
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<blockquote data-quote="AJ Peacock" data-source="post: 228673" data-attributes="member: 4885"><p>I also use multiple targets, in pretty much the same way. But I don't transcribe them onto a single target. I measure the vertical component of each shot and graph the vertical difference between it and the shot before and after it (My spreadsheet takes the measured differences and computes the MOA differences and graphs them). The graph shows me where the nodes are. On a second graph, I graph the velocity differences against the shots before and after. When I get a node on the vertical distribution graph that is in the same spot as the velocity graph, I'm a happy camper. Here is an example from an excel spreadsheet.</p><p></p><p><img src="http://i168.photobucket.com/albums/u193/AJPeacock_photos/7mmrm-ladder-test-2-1-2007-IMR4350-.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>A very accurate load was found around 57.5gr from this ladder test.</p><p></p><p>Hope this made sense.</p><p>AJ</p></blockquote><p></p>
[QUOTE="AJ Peacock, post: 228673, member: 4885"] I also use multiple targets, in pretty much the same way. But I don't transcribe them onto a single target. I measure the vertical component of each shot and graph the vertical difference between it and the shot before and after it (My spreadsheet takes the measured differences and computes the MOA differences and graphs them). The graph shows me where the nodes are. On a second graph, I graph the velocity differences against the shots before and after. When I get a node on the vertical distribution graph that is in the same spot as the velocity graph, I'm a happy camper. Here is an example from an excel spreadsheet. [IMG]http://i168.photobucket.com/albums/u193/AJPeacock_photos/7mmrm-ladder-test-2-1-2007-IMR4350-.jpg[/IMG] A very accurate load was found around 57.5gr from this ladder test. Hope this made sense. AJ [/QUOTE]
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