berger bullets

[matt_brown]

I was wondering why berger bullets have a G1 coefficient and a G7 coefficient which one do you go by. I am shooting 210gr match VLD target

 

[bjohnson]

G7. So when you use jbm ballistics or whichever calculator you're using, select G7 so it uses that drag model. G1 is for flat base bullets. G7 is for boat tail bullets.

 

[matt_brown]

Gotcha

 

[mr.big]

it has more to d with velocity,,as a bullet slows its BC comes down,the G7 figures that in and gives you better dope at extended range where you may be getting down under 1500 fps,,