Choose the appropriate bullet of your gun type for the ballistic coefficients.
.284 dia. (7mm) 160 gr. SBT
||.455 @ 2800 fps and above
.470 between 2800 and 2300 fps
.472 between 2300 and 1600 fps
.460 @ 1600 fps and below
For your convenience, here are Adobe Acrobat PDF versions
of both the Rifle And Handgun Ballistic Coefficients, that you can download
and print out to update your manual or use as a reference.
Adobe Acrobat PDF of Ballistic Coefficients