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Hunting
Long Range Hunting & Shooting
Humidity the multiplier
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<blockquote data-quote="Pdvdh" data-source="post: 345329" data-attributes="member: 4191"><p>The higher the humidity, the less dense the air, the more efficient the bullet will move though the air.</p><p></p><p>Contrary to what our senses tell us (high humidity make the air feel heavier or thicker) high humidity air is less dense air than dry air (low relative humidity air). Bullets will cut through less dense air more efficiently.</p><p></p><p>As you confirmed, humidity plays a relatively minor role compared to temperature and atmospheric pressure. It can just about be ignored, but if you know the humidity and you're shooting very long range, and your ballistics software can correct for it, then I do enter it as part of environmental conditions for predicted drops.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 345329, member: 4191"] The higher the humidity, the less dense the air, the more efficient the bullet will move though the air. Contrary to what our senses tell us (high humidity make the air feel heavier or thicker) high humidity air is less dense air than dry air (low relative humidity air). Bullets will cut through less dense air more efficiently. As you confirmed, humidity plays a relatively minor role compared to temperature and atmospheric pressure. It can just about be ignored, but if you know the humidity and you're shooting very long range, and your ballistics software can correct for it, then I do enter it as part of environmental conditions for predicted drops. [/QUOTE]
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