No .221 Fireball factory load we have sourced carries 1,000 ft·lb for whitetail deer past the muzzle. Here is why, load by load.
| Load | gr | Max ethical yd | MV fps | 500 yd ft·lb | Shoulder shot |
|---|---|---|---|---|---|
| Nosler 40 gr Varmageddon FB Tipped | 40 | wrong bullet | 3,100 | 142 | behind the shoulder only |
| Remington Premier AccuTip-V 50 gr | 50 | wrong bullet | 2,995 | 202 | behind the shoulder only |
The 1,000 ft·lb deer figure traces to Townsend Whelen and is the one everyone repeats; Hawks puts the floor nearer 800. An 8–10″ heart/lung zone. Legal: CO: 1,000 ft·lb at 100 yd · SD: 1,000 ft·lb at muzzle. 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: www.outdoorlife.com, www.petersenshunting.com, chuckhawks.com.