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Air density and bullet travel

 
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  #1  
Old 07-04-2010, 05:02 PM
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Air density and bullet travel

While this is my first full year of being trained to shoot long range 700-1100 yards, along with reloading, reading the wind, air temps ect. I have a question on air density and sound travel. When I can hear cars for miles away [light air density] my bullets shoot a minute low a 9 hundred yards, when there is no sound travel to be heard I shoot a minute high, this goes against what i've read, doesn't heavy air slow a bullet? This is usually around sundown.
Thanks,Jeff~
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Old 07-05-2010, 04:19 PM
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Re: Air density and bullet travel

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Originally Posted by houston View Post
While this is my first full year of being trained to shoot long range 700-1100 yards, along with reloading, reading the wind, air temps ect. I have a question on air density and sound travel. When I can hear cars for miles away [light air density] my bullets shoot a minute low a 9 hundred yards, when there is no sound travel to be heard I shoot a minute high, this goes against what i've read, doesn't heavy air slow a bullet? This is usually around sundown.
Thanks,Jeff~
At only 100 yards, the air density should have no significant impact. I suspect you have some other problem such as light angle or????.......Rich
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Old 07-05-2010, 09:12 PM
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Re: Air density and bullet travel

Thanks for answering rich. I never mentioned a 100 yards, 700 Yards on up??
Thanks Jeff~
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Old 07-05-2010, 09:41 PM
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Re: Air density and bullet travel

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Originally Posted by houston View Post
Thanks for answering rich. I never mentioned a 100 yards, 700 Yards on up??
Thanks Jeff~
Sorry Jeff! I misread your 900 yards as "a hundred yards". Thats what happens when your eyes start to go....Rich
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  #5  
Old 07-06-2010, 12:31 AM
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Re: Air density and bullet travel

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When I can hear cars for miles away [light air density]
You have that backwards.
sound is more easily transmitted between particles with strong bonds (tight springs)

Sound travels further and faster through dense materials.
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  #6  
Old 07-08-2010, 09:54 PM
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Re: Air density and bullet travel

Do you have one of those neat weather station things to actually measure the air density?
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