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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Velocity E.S. vs Vertical Dispersion at 1,000 yards
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<blockquote data-quote="RBrowning" data-source="post: 30097" data-attributes="member: 412"><p>You not only have faster and slower bullets leaving at different times in the barrel's vibration pattern, you have the bullets leaving at different points in the recoil cycle. Logically we assume, supported by all of the balistic printouts, that the lighter bullet will shoot flatter and hit higher. I have seen many times when the lower velocity bullet hits higher. The slower bullet is in the barrel longer and the muzzle has raised farther due to recoil. Not a big issue with a 50 pound bench gun but more obvious with sporter weight rifles. This becomes very obvious when changing to heavier bullets in a pistol and your point of impact at 100 yards goes up instead of down.</p></blockquote><p></p>
[QUOTE="RBrowning, post: 30097, member: 412"] You not only have faster and slower bullets leaving at different times in the barrel's vibration pattern, you have the bullets leaving at different points in the recoil cycle. Logically we assume, supported by all of the balistic printouts, that the lighter bullet will shoot flatter and hit higher. I have seen many times when the lower velocity bullet hits higher. The slower bullet is in the barrel longer and the muzzle has raised farther due to recoil. Not a big issue with a 50 pound bench gun but more obvious with sporter weight rifles. This becomes very obvious when changing to heavier bullets in a pistol and your point of impact at 100 yards goes up instead of down. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Velocity E.S. vs Vertical Dispersion at 1,000 yards
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