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G7 Ballistics

 
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  #1  
Old 01-14-2010, 09:16 AM
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G7 Ballistics

Is there any published G7 data for bullets other than Bergers? Perhaps the .308 200 gr Accubond?
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  #2  
Old 01-14-2010, 09:27 AM
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Re: G7 Ballistics

Quote:
Originally Posted by tayhot View Post
Is there any published G7 data for bullets other than Bergers? Perhaps the .308 200 gr Accubond?
Bergers are the only ones that i have seen. I have tried looking before but cant find anything. I guess since the G1 is a higher number all the companys think it looks better to but the bigger number out since the G7 is so much smaller. I think its only due time before the other bullet manufactors that make long range bullets follow suit.
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  #3  
Old 01-14-2010, 11:10 AM
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Re: G7 Ballistics

Bryan Litz book Applied Ballistics for Long Range Shooting has G7 BCs for many LR bullets.


You can find it here.

Products

James
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  #4  
Old 01-14-2010, 12:05 PM
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Re: G7 Ballistics

JBM Ballistics uses Bryan's G7 data in thier calculations. I haven't been able to get his book yet, so I used JBM to figure out the G7 BC on the bullet I am using. I will explain how to do it if you need.
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  #5  
Old 01-14-2010, 12:16 PM
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Re: G7 Ballistics

I like the JBM website. Please tell me how you found out the G7. Thank you
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  #6  
Old 01-14-2010, 02:23 PM
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Re: G7 Ballistics

Tayhot,

There is no published G7 BC for the 200 AB as far as I know, and JBM doesn't have a Litz (G7) data. IMO, the best way to figure it would be to shoot and measure drops and carefully recording all atmosphere data. Then adjust the G7 in the JBM program until it fits your drops. That's how I do it.

Mark
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  #7  
Old 01-14-2010, 03:07 PM
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Re: G7 Ballistics

Can someone explain to me what the G7 is ?
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