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Hunting
Long Range Hunting & Shooting
**HELP** Need to understand trajectory(heavy VS light) in bullets.
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<blockquote data-quote="LRSickle" data-source="post: 448273" data-attributes="member: 18167"><p><a href="http://www.youtube.com/watch?v=4pF8W5liSRc&feature=channel_page" target="_blank">YouTube - Pitching and Yawing of a bullet</a></p><p>Here's a video that explains the pitching and yawing of a bullet in flight. It is fairly common to shoot, say, a 1.5moa group at 100 yards and a 1moa group at 300. I've seen this happen all the time. I'm pretty sure it's because boatails do indeed go to sleep.</p><p> </p><p></p><p> </p><p>Actually, with a right-hand twist, the bullet climbs up if the wind is coming from the right and spins down if the wind is coming from the left. It's called spindrift. The riflings score little groves in the bullet that act like fins. If the wind is coming from the right the high pressure is on the right side of the bullet. The bullet is spinning clockwise and grips(?) the wind better on the right side. It's just the opposite for a left to right wind.</p><p>I hope I explained that well enough. I can picture it in my head but I don't know if I can explain it very well.</p></blockquote><p></p>
[QUOTE="LRSickle, post: 448273, member: 18167"] [URL="http://www.youtube.com/watch?v=4pF8W5liSRc&feature=channel_page"]YouTube - Pitching and Yawing of a bullet[/URL] Here's a video that explains the pitching and yawing of a bullet in flight. It is fairly common to shoot, say, a 1.5moa group at 100 yards and a 1moa group at 300. I've seen this happen all the time. I'm pretty sure it's because boatails do indeed go to sleep. Actually, with a right-hand twist, the bullet climbs up if the wind is coming from the right and spins down if the wind is coming from the left. It's called spindrift. The riflings score little groves in the bullet that act like fins. If the wind is coming from the right the high pressure is on the right side of the bullet. The bullet is spinning clockwise and grips(?) the wind better on the right side. It's just the opposite for a left to right wind. I hope I explained that well enough. I can picture it in my head but I don't know if I can explain it very well. [/QUOTE]
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**HELP** Need to understand trajectory(heavy VS light) in bullets.
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