0.253 sectional density
.388 ballistic coefficient at 2500 fps and above
.383 ballistic coefficient between 2500 and 1800 fps
.362 ballistic coefficient at 1800 fps and below
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 Varminter bullets are the standard against which other brands are measured.