No .275 Rigby factory load we have sourced carries 1,000 ft·lb for wild hog past the muzzle. Here is why, load by load.
| Load | gr | Max ethical yd | MV fps | 500 yd ft·lb | Shoulder shot |
|---|---|---|---|---|---|
| Hornady Custom 140 gr SP InterLock | 140 | wrong bullet | 2,680 | 850 | behind the shoulder only |
Vitals sit low and forward behind a shield of gristle; 1,000 ft·lb with a well-built bullet is the benchmark. Floor used: 1,000 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: backfire.tv.