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30 CAL 180GR coefficient data help

 
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Old 05-04-2009, 12:40 PM
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30 CAL 180GR coefficient data help

Does any one have data on the 180 gr accubond bullet for long range ( coef )? I know the starting coef is .507
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Old 05-04-2009, 08:17 PM
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Location: The rifle range, or archery range or behind the computer in Alaska
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Re: 30 CAL 180GR coefficient data help

I am using .524 in my 12x 300 RUM based on double chronies AND drop tests out to 725 yards.

Actually, that is the ballistic tip that I am using. The AB should be very close but possibly different.

.507 has always seemed low, not only mathematically but also in the real world.
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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.

Jeff.
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