.416 Rigby ballistic coefficient chart
G1 and G7 ballistic coefficients for 12 .416 Rigby factory loads from 400 to 410 grains, with the manufacturer's muzzle velocity and, where published, bullet length.
| Load | Weight (gr) | G1 BC | G7 BC | Velocity (fps) | Length (in) |
|---|---|---|---|---|---|
| A2 400-grain Dead Tough SP, Monolithic Solid, Lion Load SP | 400 | 0.317 | - | 2,400 | - |
| Federal 400-grain Speer African Grand Slam (P416A) | 400 | 0.317 | - | 2,370 | - |
| Federal 400-grain Speer African Grand Slam (P416B) | 400 | 0.262 | - | 2,370 | - |
| Federal 400gr. Safari Swift A-Frame (P416SA) | 400 | 0.367 | - | 2,350 | 1.398 |
| Federal 400gr. Trophy Bonded Bear Claw (P416T1) | 400 | 0.374 | - | 2,300 | 1.487 |
| Federal 400gr. Trophy Bonded Sledgehammer (P416T2) | 400 | 0.273 | - | 2,370 | 1.487 |
| Federal 400gr. Woodleigh Hydro Solid (P416WH) | 400 | 0.260 | - | 2,400 | 1.514 |
| Hornady 400gr. DGS (8265) | 400 | 0.319 | - | 2,415 | - |
| Norma 400-grain Barnes Solid (11050) | 400 | 0.216 | - | 2,297 | - |
| Norma 400-grain TXP (11069) | 400 | 0.367 | - | 2,350 | - |
| Norma 400gr. A-Frame (20110692) | 400 | 0.367 | - | 2,329 | 1.398 |
| Kynoch 410-grain Solid or Soft Nose | 410 | 0.426 | - | 2,300 | - |
Using these numbers
A ballistic coefficient describes how well a bullet keeps its speed against air resistance, compared with a standard reference projectile. G7 figures suit long, boat-tailed match and hunting bullets and stay more consistent across velocities; G1 figures are larger numbers for the same bullet and are what most manufacturers have published historically. Use whichever your calculator asks for, but never mix a G1 number with the G7 drag model.
Every load here is in the ballistic calculator's bullet library — search for it to build a range card in one step, then true the velocity against your own chronograph.