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Rifles, Reloading, Optics, Equipment
Reloading
Using chronograph data to determine the best load????
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<blockquote data-quote="bailey1474" data-source="post: 92866" data-attributes="member: 3249"><p>[ QUOTE ]</p><p> I use the ladder method to ID nodes by both grouping on paper and chrono results. Guess what, they normally match up, when a close powder charge range groups on a ladder it will also group very closely on velocity on the chrono. I can pick the tuning node in the MV range I want and normally pick a weight in the middle of the node to take care of any variances with temp or pressure spikes. </p><p> </p><p></p><p>[/ QUOTE ] </p><p></p><p>That is exactly what I used the chrono for. I guess I could have got caught up w/velocity and took the load that was shooting almost 3000 fps, but I saw the wide node between 2830 and 2870 . I loaded 85 gr of Retumbo behind the 240 @ 2850 fps and the rifle shoots .25 MOA @ 100 yds. </p><p></p><p>I'm not sure of the group sizes @ longer ranges yet, but can tell you I nailed two consecutive milk jugs @ 950 yds and a whitetail @ 503 yds. I'm going to have to agree w/BountyHunter on this one. I believe a chrono can be used to find accuracy nodes as I did w/this rifle. Just remember that accuracy is the first priority, not speed.</p></blockquote><p></p>
[QUOTE="bailey1474, post: 92866, member: 3249"] [ QUOTE ] I use the ladder method to ID nodes by both grouping on paper and chrono results. Guess what, they normally match up, when a close powder charge range groups on a ladder it will also group very closely on velocity on the chrono. I can pick the tuning node in the MV range I want and normally pick a weight in the middle of the node to take care of any variances with temp or pressure spikes. [/ QUOTE ] That is exactly what I used the chrono for. I guess I could have got caught up w/velocity and took the load that was shooting almost 3000 fps, but I saw the wide node between 2830 and 2870 . I loaded 85 gr of Retumbo behind the 240 @ 2850 fps and the rifle shoots .25 MOA @ 100 yds. I'm not sure of the group sizes @ longer ranges yet, but can tell you I nailed two consecutive milk jugs @ 950 yds and a whitetail @ 503 yds. I'm going to have to agree w/BountyHunter on this one. I believe a chrono can be used to find accuracy nodes as I did w/this rifle. Just remember that accuracy is the first priority, not speed. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Using chronograph data to determine the best load????
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