Forum: 300 Whisper Rifles and Pistols
05-12-2010, 12:04 PM
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Replies: 16
Views: 3,145
At 0C the speed of sound in dry air is 1087.3...
At 0C the speed of sound in dry air is 1087.3 ft/sec. There is very close to a 2 ft/sec change in the speed of sound for each 1 degree C change in temperature. That simple rule works over the...
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Forum: 300 Whisper Rifles and Pistols
05-07-2010, 05:38 PM
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Replies: 16
Views: 3,145
This is a useful graph from Finland: A noisy...
This is a useful graph from Finland: A noisy bullet has more drag, produces more turbulance, and requires a faster spin rate. Optimum subsonic speed for energy vs noise is at the lower knee of...
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