Ballistics program variables

[stubbicatt]

Does anybody know of a ballistics program online that will extrapolate BC from velocity and shot placement (drop) data so that one may make a come-up table? Conversely, does anybody have a BC for the RCBS .309" 180grain RNFPGC bullet?

Thanks.

Regards,
Stubb

[country gent]

Ive been looking for one also that does it from velocities ranges. With the new labradar chronograph I get 5 readings from each shot from muzzle to 150 yds. Im still looking for one too.

[Tom Myers]

Does anybody know of a ballistics program online that will extrapolate BC from velocity and shot placement (drop) data so that one may make a come-up table? Conversely, does anybody have a BC for the RCBS .309" 180grain RNFPGC bullet?

Thanks.

Regards,
Stubb

Stubb,

The Precision Ballistics Software (http://tmtpages.com/basbal/bal.htm) can do just that and much more.

This may be the bullet BC that you are looking for. The Calculated BC is 0.2709;
Click on image
166181

Click for the Help page for the Estimate a Ballistic Coefficient from a Trajectory (http://tmtpages.com/Ballistics_Ver-4_Help/hlp_estimate_bc.htm)

http://tmtpages.com/Ballistics_Ver-4_Help/bm94.png


http://tmtpages.com/Ballistics_Ver-4_Help/bm69.png


http://tmtpages.com/Ballistics_Ver-4_Help/bm43.png

http://tmtpages.com/Ballistics_Ver-4_Help/bm70.png

[runfiverun]

that ain't fair Tom.
just go ahead and write your own..:lol:

[Shiloh]

Good info here!!

Shiloh

[stubbicatt]

Thanks fellas.