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true ballistic coefficient? Nodes?

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Old 03-25-2007, 10:52 PM
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Join Date: Jan 2007
Location: North Idaho
Posts: 670
true ballistic coefficient? Nodes?

How do you find the true b.c. of your bullet? Also what is a node and how does it work?
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Old 03-26-2007, 10:58 AM
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Join Date: Jan 2003
Location: The rifle range, or archery range or behind the computer in Alaska
Posts: 3,418
Re: true ballistic coefficient? Nodes?

How do you find the true b.c. of your bullet?

[/ QUOTE ]

There is more than one way to skin this cat.

One of the many ways is to shoot through 2 chronies spaced some distance apart such as 100-300 yards. Then a ballistic calculator will give you the BC.

One other way (my favoraite) is to zero your rifle at a specified distance. 300 yards works near perfect. Then fire your load out to your maximum range and at 100 yard increments between. Then after paying close attention to your real muzzle velocity and the current air density during the test, you can manipulate the numbers in your calculator until the BC and drag function make your chart match the one you just created. Once that is done, you have your BC and you will not need to change it in the program for new ballistics, just the air density.
Originally Posted by Broz View Post
Please just answer one very simple question. Why would anyone shooting long range load a low BC , low SD 168 gr offering in a 300 win???????

My answer to this is. The only reason is to make the 7 RM look good. There is no other reason.

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