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Rifles, Reloading, Optics, Equipment
Rimfire and Airguns
Long Range 22LR
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<blockquote data-quote="Greyfox" data-source="post: 1473074" data-attributes="member: 10291"><p>When using a Ballistic calculator or RF, attention has to be paid primarily to BC adjustment. The Magnetospeed velocities tend to be very accurate as does the Lab Radar. I have cross checked them and they are generally within a couple of FPS. Bryan Littz's Second Edition has a chapter that lists a very large number of ammo types with his measured velocity, SD, and BC. However, while they may work nicely with your rifle, it's more likely you will have to measure velocity, ES, and BC for your specific rifle. I wil measure velocity/ES with my Magnetospeed and enter this data and the published BC. I will then the fine tune the BC to POI at 300 Yards. With this setting, my calculators are usually dead on from 25-350 Yards.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 1473074, member: 10291"] When using a Ballistic calculator or RF, attention has to be paid primarily to BC adjustment. The Magnetospeed velocities tend to be very accurate as does the Lab Radar. I have cross checked them and they are generally within a couple of FPS. Bryan Littz’s Second Edition has a chapter that lists a very large number of ammo types with his measured velocity, SD, and BC. However, while they may work nicely with your rifle, it’s more likely you will have to measure velocity, ES, and BC for your specific rifle. I wil measure velocity/ES with my Magnetospeed and enter this data and the published BC. I will then the fine tune the BC to POI at 300 Yards. With this setting, my calculators are usually dead on from 25-350 Yards. [/QUOTE]
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