2 of 4 .357 Mag factory loads carry 800 ft·lb and expansion velocity for pronghorn; the best reach 50 yd (Winchester Super-X 158 gr Jacketed Hollow Point). Ranked, with the drop chart for each.
| Load | gr | Max ethical yd | MV fps | 500 yd ft·lb | Shoulder shot |
|---|---|---|---|---|---|
| Winchester Super-X 158 gr Jacketed Hollow Point | 158 | 50 | 1,830 | 226 | behind the shoulder only |
| Winchester Super-X 158 gr Jacketed Soft Point | 158 | 50 | 1,830 | 226 | behind the shoulder only |
| Barnes Pioneer 140 gr XPB | 140 | not enough | 1,695 | 178 | yes |
| Barnes Pioneer 180 gr JHP FN | 180 | wrong bullet | 1,655 | 282 | behind the shoulder only |
Chuck Hawks: ~800 ft·lb at impact with a .24″+ bullet of SD ≥ .215. Legal: CO: 1,000 ft·lb at 100 yd (rifle). Floor used: 800 ft·lb at impact plus the bullet's published expansion velocity. Orange = a target or varmint bullet (construction, not energy); red = never carries the energy. Sources: www.chuckhawks.com, cpw.state.co.us.