Varmint hunting places extreme demands on bullet performance. Such bullets must be exceptionally accurate to hit small targets, lightly constructed to provide explosive expansion while minimizing ricochets, and lightweight to obtain high velocities with flat trajectories.

Sierra BlitzKing bullets are the standard against which other brands are measured.

.20 Caliber BlitzKing
39 Grain

Diameter: .204 or 5.18mm
Sectional Density: .134
Ballistic Coefficients: .287 @ 3600 fps and above; .270 between 3600 and 3400 fps; .255 @ 3400 and 2800 fps; .236 between 2800 and 2300fps; .210 @ 2300 fps and below

Note: These are component bullets, not loaded ammunition.