Choose the appropriate bullet of your gun type for the ballistic coefficients.
.308 dia. 125 gr. HP MatchKing
||.349 @ 2650 fps and above
.338 between 2000 and 2650 fps
.330 between 1600 and 2000
.310 @ 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