Choose the appropriate bullet of your gun type for the ballistic coefficients.
Bullet Name
Diameter inches
Weight grains
Sectional Density
Ballistic Coefficients
.224 dia. 55 gr. SBT
.224
55
.157
.250 @ 3000 fps and above .245 between 3000 and 2000 fps .235 @ 2000 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.