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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
30 nolser velocity vs drop chart
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<blockquote data-quote="The Oregonian" data-source="post: 1664585" data-attributes="member: 51405"><p>One thing I've often wondered about...we know the barrel has harmonics and it goes up and down. If the barrel has a slight rise in it when a bullet leaves then it could cause these type of situations. If the bullet was going faster or slower it could cause the barrel end to be slightly pointed down.</p><p></p><p>In other words, the ballistic apps with BC and velocity as inputs and drop as an output assume the barrel is perfectly flat when the bullet leaves the barrel.</p><p></p><p>I have no real world experience with this other than having to adjust my velocities to get actual and predicted drops to match, so this is more of me wondering if this could be a cause.</p></blockquote><p></p>
[QUOTE="The Oregonian, post: 1664585, member: 51405"] One thing I’ve often wondered about...we know the barrel has harmonics and it goes up and down. If the barrel has a slight rise in it when a bullet leaves then it could cause these type of situations. If the bullet was going faster or slower it could cause the barrel end to be slightly pointed down. In other words, the ballistic apps with BC and velocity as inputs and drop as an output assume the barrel is perfectly flat when the bullet leaves the barrel. I have no real world experience with this other than having to adjust my velocities to get actual and predicted drops to match, so this is more of me wondering if this could be a cause. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
30 nolser velocity vs drop chart
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