Trying to figure out the BC

[snarlingdog]

I am trying to turn in my data for my CDS dial. I'm using hornady eldx 162gn .284 bullets. But on the BC they have a G1 .630 and G7 .315. Which one do I use?

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[DizzyJ]

G7 is generally thought to be the most accurate, but either one will work. Just make sure you're showing which model you're going by.

Edit:
For long range Bullets.

 

[DizzyJ]

G1 vs. G7 Ballistic Coefficients — What You Need to Know « Daily Bulletin

The better, up-to-date ballistics programs let you select either G1 or G7 Ballistic Coefficient (BC) values when calculating a trajectory. The ballistic coefficient (BC) of a body is a measure of its ability to overcome air resistance in flight. You've probably seen that G7 values are...

bulletin.accurateshooter.com

 

[snarlingdog]

Ok thanks I figured it out.

 

[zenbreath]

You can do it the old fashioned way. Get a velocity, find point of impact and scope settings at 100, 200, 300 and 600 yards. Start plugging in BCs into a ballistics calculator and see what number matches your field data.