117.0 gr. Sierra SPT Pro-Hunter (1640) - .257

Manufacturer Sierra
Model SPT Pro-Hunter
Model Number 1640
Caliber .257
Weight 117.0 gr.
Sectional Density 0.253

117.0 gr. Sierra SPT Pro-Hunter (1640) - .257

Deflection at 600 and 1,000 yards in a 10mph cross wind.

Drag Profiles

Data Source Drag Function BC Form Factor
Sierra G1

0.362 below 1,800 fps

0.383 between 1,800 fps and 2,500 fps

0.388 above 2,500 fps

Applied Ballistics G7 0.180 1.406
Applied Ballistics G1 0.351 0.721