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How bullet impact is affected by altitude and temperature...

 
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  #1  
Old 07-15-2009, 12:07 PM
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How bullet impact is affected by altitude and temperature...

Anyone have some useful formulas on how bullet impact is affected by altitude and temperature?
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Old 07-15-2009, 12:19 PM
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Re: How bullet impact is affected by altitude and temperature...

It involves calculus so no there arent any usefull formulas to quickly figure it out.

The quickest is to use a ballistic calculator on a pocket PC in the field.
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Old 07-15-2009, 01:13 PM
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Re: How bullet impact is affected by altitude and temperature...

I never said quickly.
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Old 07-17-2009, 01:21 PM
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Re: How bullet impact is affected by altitude and temperature...

I can give you an example, as I looked into the same thing yesterday.

The difference in bullet drop with my load(.417 B.C.@2800) between 980 elevation and 5000 elevation, is only 2" at 500 yards. Temp. remaining the same.
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Old 07-17-2009, 03:07 PM
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Re: How bullet impact is affected by altitude and temperature...

I use the jbm ballistics calculator on line and then produce a laminated chart for my particular application for field use.........Rich
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Old 07-18-2009, 10:27 AM
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Re: How bullet impact is affected by altitude and temperature...

Quote:
Originally Posted by yukonal View Post
I can give you an example, as I looked into the same thing yesterday.

The difference in bullet drop with my load(.417 B.C.@2800) between 980 elevation and 5000 elevation, is only 2" at 500 yards. Temp. remaining the same.
Thanks a lot for that!
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Old 07-18-2009, 02:04 PM
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Re: How bullet impact is affected by altitude and temperature...

Quote:
Originally Posted by yukonal View Post
I can give you an example, as I looked into the same thing yesterday.

The difference in bullet drop with my load(.417 B.C.@2800) between 980 elevation and 5000 elevation, is only 2" at 500 yards. Temp. remaining the same.
Those are typical results. Out to 600 yards there is ussually no point in looking any further that your drop chart. Past that however such as 700 and beyond, the difference between 980' and 5000' is enough for a clean miss.
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Long range shooting is a process that ends with a result. Once you start to focus on the result (where the shot goes, how big the group is, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.
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