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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
True muzzle velocity
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<blockquote data-quote="J E Custom" data-source="post: 1046396" data-attributes="member: 2736"><p>If you have a chronograph that has a proof screen it will tell you the velocity loss between screens </p><p>and with the known distance from the muzzle you can calculate the muzzle velocity based on the loss in velocity in 2 feet increments. (It wont be exact, but it will be close).</p><p></p><p>One other method is to buy a Magneto Speed. (It measures velocity @ the muzzle).</p><p></p><p>When all else fails and/or you don't have a chronograph,you can shoot at least 3 rounds at 100,200,300,400 and 500 or 600 and measure drop at the center of all groups and compare it to a drop chart that has velocity and trajectory numbers. In any case this should be done to assure that your data(velocity, BCs Of bullet, and MOA are all correct before taking a very long shot.</p><p></p><p>Not very scientific, But they work. </p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1046396, member: 2736"] If you have a chronograph that has a proof screen it will tell you the velocity loss between screens and with the known distance from the muzzle you can calculate the muzzle velocity based on the loss in velocity in 2 feet increments. (It wont be exact, but it will be close). One other method is to buy a Magneto Speed. (It measures velocity @ the muzzle). When all else fails and/or you don't have a chronograph,you can shoot at least 3 rounds at 100,200,300,400 and 500 or 600 and measure drop at the center of all groups and compare it to a drop chart that has velocity and trajectory numbers. In any case this should be done to assure that your data(velocity, BCs Of bullet, and MOA are all correct before taking a very long shot. Not very scientific, But they work. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
True muzzle velocity
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