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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Velocity swings
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<blockquote data-quote="MontanaRifleman" data-source="post: 482403" data-attributes="member: 11717"><p>I think Michael is giving you some very good advice. But... you need to take your chrony readings with a grain of salt. It might show yo a 30 fps spread when in fact it's really a 10 fps thread. When I got a second chrony and set them up back to back, their reading varried anywhere from 5-60 fps difference on the same shot string... a real eye opener. Bottomline, if your load is grouping well go with it. If you have significant vertical dispersion at extended ranges then you probably have a velocity issue.</p><p></p><p>I would be very hesitant to throw away a good load based on what my imperfect chrony was spitting out. Shoot some down range groups and see what that's telling you.</p><p></p><p>-Mark</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 482403, member: 11717"] I think Michael is giving you some very good advice. But... you need to take your chrony readings with a grain of salt. It might show yo a 30 fps spread when in fact it's really a 10 fps thread. When I got a second chrony and set them up back to back, their reading varried anywhere from 5-60 fps difference on the same shot string... a real eye opener. Bottomline, if your load is grouping well go with it. If you have significant vertical dispersion at extended ranges then you probably have a velocity issue. I would be very hesitant to throw away a good load based on what my imperfect chrony was spitting out. Shoot some down range groups and see what that's telling you. -Mark [/QUOTE]
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